uno | Build Mobile , Desktop and WebAssembly | Form library

 by   unoplatform C# Version: 4.8.15 License: Non-SPDX

kandi X-RAY | uno Summary

uno is a C# library typically used in Telecommunications, Media, Telecom, User Interface, Form, Xamarin applications. uno has no bugs, it has no vulnerabilities and it has medium support. However uno has a Non-SPDX License. You can download it from GitHub.
The Uno Platform is a UI Platform for building single-codebase applications for Windows, Web/WebAssembly, iOS, macOS, Android and Linux. It allows C# and WinUI XAML code to run on all target platforms, while allowing you control of every pixel. It comes with support for Fluent, Material and Cupertino design systems out of the box. Uno Platform implements a growing number of the WinRT and WinUI APIs, such as Windows.UI.Xaml, to enable WinUI applications to run on on all platforms with native performance. Use the WinUI tooling from Windows in Visual Studio, such as XAML Hot Reload and C# Edit and Continue, build your application as much as possible on Windows, then validate that your application runs on iOS, Android, macOS and WebAssembly. Visit our documentation for more details.
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                        summary
                        uno has a medium active ecosystem.
                        summary
                        It has 7513 star(s) with 623 fork(s). There are 199 watchers for this library.
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                        There were 4 major release(s) in the last 6 months.
                        summary
                        There are 1324 open issues and 3383 have been closed. On average issues are closed in 82 days. There are 131 open pull requests and 0 closed requests.
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                        It has a neutral sentiment in the developer community.
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                        The latest version of uno is 4.8.15
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                                    uno has 0 bugs and 0 code smells.
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                                                uno has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
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                                                uno code analysis shows 0 unresolved vulnerabilities.
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                                                There are 0 security hotspots that need review.
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                                                          kandi-License License

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                                                            uno has a Non-SPDX License.
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                                                            Non-SPDX licenses can be open source with a non SPDX compliant license, or non open source licenses, and you need to review them closely before use.
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                                                                        uno releases are available to install and integrate.
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                                                                        Installation instructions are available. Examples and code snippets are not available.
                                                                        summary
                                                                        uno saves you 2982 person hours of effort in developing the same functionality from scratch.
                                                                        summary
                                                                        It has 14835 lines of code, 210 functions and 12380 files.
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                                                                        It has high code complexity. Code complexity directly impacts maintainability of the code.
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                                                                                  uno Key Features

                                                                                  Supported platforms: Windows 10 and Windows 11 (via the standard UWP and WinUI Toolkit) Windows 7 (via Skia) iOS, macOS and Android (via Xamarin and [.NET] (https://dotnet.microsoft.com/)) WebAssembly through the .NET Runtime WebAssembly SDK Linux through Skia (Gtk and FrameBuffer)
                                                                                  Dev loop: Develop on Windows first using Visual Studio XAML Hot Reload for live XAML edition on each keystroke C# Hot Reload on Windows (VS2022), Linux and mac (VS Code) Validate on other platforms as late as possible Develop in VS Code, Codespaces or GitPod XAML Hot Reload for WebAssembly, Linux, iOS and Android Uno.UITest, a library to create Cross-Platform UI Tests for WebAssembly, iOS and Android.
                                                                                  Cross Platform Controls: Control Templating Data Templating Styling Rich Animations
                                                                                  UWP/WinUI Code Support: Windows Community Toolkit MVVM Light Toolkit Microsoft XAML Behaviors Prism SkiaSharp SkiaSharp.Extended MVVMCross (soon) ReactiveUI Official WindowsStateTriggers Xamarin.Forms for UWP, NuGet Rx.NET ColorCode-Universal LibVLCSharp Any UWP project
                                                                                  Responsive Design: Visual State Manager State Triggers Adaptive Triggers
                                                                                  Platform Specific: Native controls and properties via conditional XAML Any of the existing Xamarin iOS/Android libraries available
                                                                                  Xamarin.Forms Renderers: Uno Platform WebAssembly Renderers for Xamarin.Forms

                                                                                  uno Examples and Code Snippets

                                                                                  No Code Snippets are available at this moment for uno.
                                                                                  Community Discussions

                                                                                  Trending Discussions on uno

                                                                                  Same component with different parameters is not updating in react
                                                                                  chevron right
                                                                                  Affect another div when hovering CSS
                                                                                  chevron right
                                                                                  What is the Rust equivalent of Serial.println from the Arduino C++ API?
                                                                                  chevron right
                                                                                  Can I use Prism for WinUI 3 apps?
                                                                                  chevron right
                                                                                  Haskell Data Type Instance as operator
                                                                                  chevron right
                                                                                  Uno Platform: The imported project was not found
                                                                                  chevron right
                                                                                  WPF Framework Classes/Project => UNO? Is that possible?
                                                                                  chevron right
                                                                                  Using C++14 with AVR-GCC (Arduino Uno)
                                                                                  chevron right
                                                                                  pure css html tabs the click does not change
                                                                                  chevron right
                                                                                  Check if a field is empty and get value from another column
                                                                                  chevron right

                                                                                  QUESTION

                                                                                  Same component with different parameters is not updating in react
                                                                                  Asked 2022-Mar-15 at 16:03

                                                                                  Class based app here.

                                                                                  MainComponent.js
                                                                                  
                                                                                  export class MainComponent extends Component {
                                                                                      constructor(props) {
                                                                                          super(props);
                                                                                          this.state = {
                                                                                              name: '',
                                                                                              nr: 0
                                                                                          }
                                                                                      }
                                                                                  
                                                                                      btnClicked(e, nr, name){
                                                                                          this.setState({name: name});
                                                                                          this.setState({nr: nr});
                                                                                      }
                                                                                  
                                                                                      render() {
                                                                                          return (
                                                                                              
                                                                                                  
                                                                                                       this.btnClicked(e, '1', 'one')}>UNO
                                                                                                       this.btnClicked(e, '2', 'two')}>DUE
                                                                                                       this.btnClicked(e, '1', 'three')}>TRE
                                                                                                  
                                                                                                  
                                                                                                      {this.state.nr === '1' && }
                                                                                                      {this.state.nr === '2' && }
                                                                                                  
                                                                                              
                                                                                          )
                                                                                      }
                                                                                  }
                                                                                  export default MainComponent;
                                                                                  

                                                                                  And then here are the 2 child-components:

                                                                                  Child1.js
                                                                                  export class Child1 extends Component {
                                                                                      constructor(props) {
                                                                                          super(props);
                                                                                          this.state = {
                                                                                              name: props.name,
                                                                                          }
                                                                                      }
                                                                                  
                                                                                      render() {
                                                                                          return (
                                                                                              
                                                                                                  
                                                                                                      {
                                                                                                          this.state.name !== '' &&
                                                                                                          {this.state.name}
                                                                                                      }
                                                                                                  
                                                                                              
                                                                                          )
                                                                                      }
                                                                                  }
                                                                                  
                                                                                  export default Child1;
                                                                                  
                                                                                  
                                                                                  Child2.js
                                                                                  export class Child2 extends Component {
                                                                                      constructor(props) {
                                                                                          super(props);
                                                                                          this.state = {
                                                                                              name: props.name,
                                                                                          }
                                                                                      }
                                                                                  
                                                                                      render() {
                                                                                          return (
                                                                                              
                                                                                                  
                                                                                                      {
                                                                                                          this.state.name !== '' &&
                                                                                                          {this.state.name}
                                                                                                      }
                                                                                                  
                                                                                              
                                                                                          )
                                                                                      }
                                                                                  }
                                                                                  
                                                                                  export default Child2;
                                                                                  

                                                                                  When I click to the button "One" I see the text "One". But when clicking on button "Three" I still see the same text "One". I have tried adding forceUpdate but it didnt help:

                                                                                  btnClicked(e, nr, name){
                                                                                      this.forceUpdate(function(){
                                                                                          this.setState({name: name});
                                                                                          this.setState({nr: nr});
                                                                                      });
                                                                                  }
                                                                                  

                                                                                  How can I instruct the app to rerender the child component at each click?

                                                                                  ANSWER

                                                                                  Answered 2022-Mar-15 at 16:03

                                                                                  In this case you should not assign the Child components prop value to state. Just use the prop value in the component.

                                                                                  export class Child1 extends Component {
                                                                                      render() {
                                                                                          return (
                                                                                              
                                                                                                  
                                                                                                      {
                                                                                                          this.props.name !== '' &&
                                                                                                          {this.props.name}
                                                                                                      }
                                                                                                  
                                                                                              
                                                                                          )
                                                                                      }
                                                                                  }
                                                                                  
                                                                                  export default Child1;
                                                                                  

                                                                                  The Child component's constructor will not be called each time the props update. So, state will not be updated when the props are updated.

                                                                                  In this case - as in most cases - you do not need forceUpdate.

                                                                                  Source https://stackoverflow.com/questions/71485283

                                                                                  QUESTION

                                                                                  Affect another div when hovering CSS
                                                                                  Asked 2022-Jan-31 at 10:25

                                                                                  I cannot seem to sort out this challenge. I want the div #project1 to show (visibility, opacity, display) when hover on #img1.

                                                                                  can't find the solution. would really appreciate some help.

                                                                                  
                                                                                      
                                                                                          
                                                                                              
                                                                                              
                                                                                              
                                                                                              
                                                                                          
                                                                                          
                                                                                              
                                                                                                  Project Title
                                                                                                  

                                                                                  Lorem ipsum dolor sit amet consectetur adipisicing elit. Voluptas amet eaque fuga labore facere rem, voluptatem exercitationem ullam molestiae repudiandae obcaecati minus assumenda distinctio numquam similique deserunt temporibus, odit Lorem ipsum dolor sit amet consectetur adipisicing elit. Provident culpa iste nostrum expedita quam et hic iusto assumenda suscipit maxime, ullam nulla dolores eum sunt error, molestias debitis, quia perferendis?

                                                                                  ANSWER

                                                                                  Answered 2022-Jan-31 at 03:08

                                                                                  document.getElementById('img1').onmouseover = () => {
                                                                                      document.getElementById('project1').style.display = 'block';
                                                                                  }
                                                                                  document.getElementById('img1').onmouseout = () => {
                                                                                      document.getElementById('project1').style.display = 'none';
                                                                                  }
                                                                                  
                                                                                    
                                                                                      
                                                                                        
                                                                                        
                                                                                        
                                                                                        
                                                                                      
                                                                                      
                                                                                        
                                                                                          Project Title
                                                                                          

                                                                                  Lorem ipsum dolor sit amet consectetur adipisicing elit. Voluptas amet eaque fuga labore facere rem, voluptatem exercitationem ullam molestiae repudiandae obcaecati minus assumenda distinctio numquam similique deserunt temporibus, odit Lorem ipsum dolor sit amet consectetur adipisicing elit. Provident culpa iste nostrum expedita quam et hic iusto assumenda suscipit maxime, ullam nulla dolores eum sunt error, molestias debitis, quia perferendis?

                                                                                  You can do that using javascript's onmouseover and onmouseout events

                                                                                  Hope that helps you,
                                                                                  Thank you!

                                                                                  Source https://stackoverflow.com/questions/70920842

                                                                                  QUESTION

                                                                                  What is the Rust equivalent of Serial.println from the Arduino C++ API?
                                                                                  Asked 2022-Jan-27 at 18:21

                                                                                  A common pattern in Arduino C++ sketches is the use of Serial.print() or Serial.println() to debug problems.

                                                                                  What is the corresponding Rust idiom when programming for the Arduino Uno?

                                                                                  ANSWER

                                                                                  Answered 2022-Jan-27 at 18:21

                                                                                  One technique involves the use of arduino_hal::default_serial! and ufmt::writeln!

                                                                                  For setup:

                                                                                  let dp = arduino_hal::Peripherals::take().unwrap();
                                                                                  let pins = arduino_hal::pins!(dp);
                                                                                  let mut serial = arduino_hal::default_serial!(dp, pins, 115200);
                                                                                  

                                                                                  and when you need to print

                                                                                  ufmt::uwriteln!(&mut serial, "{} bytes available", count);
                                                                                  

                                                                                  The uwriteln! macro is not as powerful as format! or println! from std. For instance, it does not support {:02x} for integers.

                                                                                  Source https://stackoverflow.com/questions/70883797

                                                                                  QUESTION

                                                                                  Can I use Prism for WinUI 3 apps?
                                                                                  Asked 2022-Jan-15 at 16:46

                                                                                  I'd like to use Prism in a WinUI 3 app, and I saw the Prism v8.1 release.

                                                                                  Additionally Prism 8.1 offers a new Prism.Uno.WInUI platform target for those wishing to build either native WinUI3, or Cross Platform WinUI 3 apps with Uno Platform.

                                                                                  I'm confused about Uno. I'm not using Uno, can I still use Prism in a WinUI 3 app without using Uno?

                                                                                  If yes, which packages do I need to install and in which projects? (I'd like to use DryIoc)

                                                                                  I guess Prism.DryIoc.Uno.WinUI must be added to the WinUI 3 app project.

                                                                                  But what about the other packages for using Prism?

                                                                                  ANSWER

                                                                                  Answered 2022-Jan-10 at 12:59

                                                                                  If you specifically want to use 'Dryloc', you could try to use one of these Nuget packages:

                                                                                  • Prism.Container.Extensions
                                                                                  • Prism.DryIoc.Extensions

                                                                                  They should both be of general use and not target a specific UI technology.

                                                                                  If you install 'Prism.DryIoc.Extensions' using the Nuget-Package manager, dependent packages should be installed automatically.

                                                                                  See Github - Prism.Container.Extensions


                                                                                  Note there is also a package 'Prism.Core' that does not target a specific UI framework either. If contains features like an event aggregator.

                                                                                  Source https://stackoverflow.com/questions/70223599

                                                                                  QUESTION

                                                                                  Haskell Data Type Instance as operator
                                                                                  Asked 2021-Dec-10 at 13:22

                                                                                  I have recieved a exercice to learn about data types in haskell and I can't figure out how to solve this one.

                                                                                  They got me a data like : data CatLista a = Nil | Unit a| Conc (CatLista a) (CatLista a) deriving Eq and I need to make the data types become: Nil -> [] , Unit x -> [x] , Conc -> same operator as (++)

                                                                                  So if you run Conc (Unit 9)(Conc (Unit 5) (Unit 3)) == Conc (Conc (Unit 9) (Unit 5))(Conc (Unit 3) Nil) should give true and Conc (Unit 9)(Unit 3) == Conc (Unit 3) (Unit 9) should give false.

                                                                                  I already tried instancing the show class like this:

                                                                                  instance Show a => Show (CatLista a) where
                                                                                      show a = case a of
                                                                                          Nil -> []
                                                                                          Unit x -> "[" ++ show x ++ "]"
                                                                                          Conc Nil dos -> show dos
                                                                                          Conc uno Nil -> show uno 
                                                                                          Conc uno dos -> "[" + show uno ++ "," ++ show dos ++ "]"
                                                                                  

                                                                                  I'm quite new to haskell so I may not know some basics, because I can't understand why if I run it (beeing Conc uno dos -> show uno ++ show dos) with the same command as bellow Conc (Unit 9)(Conc (Unit 5) (Unit 3)) == Conc (Conc (Unit 9) (Unit 5))(Conc (Unit 3) Nil) it still returns False even tough they both return the same [9][5][3] with my show instance.

                                                                                  EDIT

                                                                                  Thanks to you I made it, it know returns correctly the values like intended with this code:

                                                                                  toLista :: Eq a => CatLista a -> [a]
                                                                                  toLista Nil = []
                                                                                  toLista (Unit x) = [x]
                                                                                  toLista (Conc a b) 
                                                                                                      | a == Nil = toLista b 
                                                                                                      | b == Nil = toLista a
                                                                                                      | otherwise = (++) (toLista a) (toLista b)
                                                                                  
                                                                                  instance (Show a,(Eq a)) => Show (CatLista a) where 
                                                                                      show a= show (toLista a)
                                                                                  

                                                                                  But still I dont know why if I try the same comparation it still returns False, even tough I get returned the same [9,5,3].

                                                                                  This is probably due to my lack of knowledge in Haskell, sorry about that.

                                                                                  ANSWER

                                                                                  Answered 2021-Dec-08 at 20:49

                                                                                  Two values are not equivalent if these produce the same String when calling show on these. The (==) :: Eq a => a -> a -> Bool function is implemented by the Eq typeclass. You thus need to implement the instance of Eq for your CatLista yourself.

                                                                                  The default implementation for Eq, if you use deriving Eq is that two values are the same if they have the same data constructor, and the parameters are elementwise equivalent by calling (==) on these.

                                                                                  You thus can implement the instance for Eq yourself with:

                                                                                  data CatLista a = Nil | Unit a| Conc (CatLista a) (CatLista a) -- ← no deriving Eq
                                                                                  
                                                                                  instance Eq a => Eq (CatLista a) where
                                                                                      ca == cb = toLista ca == toLista cb

                                                                                  Source https://stackoverflow.com/questions/70279416

                                                                                  QUESTION

                                                                                  Uno Platform: The imported project was not found
                                                                                  Asked 2021-Nov-21 at 11:57

                                                                                  I've just installed uno platform and I'm having a bit of an issue. Whenever I create new projects the projects come with errors. I wasn't able to find info about this specific kind of errors on the website. I've also enabled long paths just in case. Any idea what's causing this?

                                                                                  ANSWER

                                                                                  Answered 2021-Nov-21 at 11:57

                                                                                  The problem is you are using spaces in the project name. Uno does not currently support this.
                                                                                  I also strongly discourage the use of spaces in the name for any other C# projects to avoid unnecessary problems. The standard C# naming contains a dot, for example: Ryder.Display or simply RyderDisplay.

                                                                                  Source https://stackoverflow.com/questions/70054312

                                                                                  QUESTION

                                                                                  WPF Framework Classes/Project => UNO? Is that possible?
                                                                                  Asked 2021-Oct-29 at 13:25

                                                                                  In the last years i have developed a huge amount of .NET Framework (4.8) Classes with functions and methods for my applications. Most if this apps are commandline apps. A few apps are WPF or Winform-Apps.

                                                                                  Now I want to start with Apps they run in browser. I try to use "Blazor", but the need .NET CORE or .NET STANDARD - and they cann´t use projects/classes from ".NET Framework".

                                                                                  My Question: If i use uno-platform only for UI, can I use/reference to ".NET Framework" Projects oder Libraries? Or have it the same limitation like Razor-Apps?

                                                                                  ANSWER

                                                                                  Answered 2021-Oct-29 at 09:10

                                                                                  Uno Platform in the browser and Blazor share the same underlying .NET WebAssembly runtime, so they have the same limitations in this regard. If you want to use older code you'll need to recompile it, and you won't have access to .NET Framework-only APIs.

                                                                                  Source https://stackoverflow.com/questions/69765339

                                                                                  QUESTION

                                                                                  Using C++14 with AVR-GCC (Arduino Uno)
                                                                                  Asked 2021-Oct-05 at 09:43

                                                                                  I'm trying try get my Arduino code to compile with -std=c++14 instead of the default -std=gnu++11. To this end, I added to my platformio.ini:

                                                                                  build_flags = -std=c++14
                                                                                  build_unflags = -std=gnu++11
                                                                                  

                                                                                  However, when I then try to compile, I get the following linker errors:

                                                                                  :(.text+0x20a4): undefined reference to `operator delete(void*, unsigned int)'
                                                                                  

                                                                                  (multiple times)

                                                                                  I seems that the delete operator is missing. I found some threads about adding it manually, which appears to be used to be necessary in the past with Arduino. However, this shouldn't be the case anymore, and with the default gnu++11 I do not have this issue. Why is this missing with c++14 (and later standards and their GNU extensions) and not with the default gnu++11?

                                                                                  I only have this problem with avr-gcc (for Arduino Uno), with arm-none-eabi-g++ (for Teensy), this problem does not occur.

                                                                                  ANSWER

                                                                                  Answered 2021-Oct-05 at 09:43

                                                                                  After some searching around it turns out that C++ from C++14 on defines two additional delete operators:

                                                                                  void operator delete ( void* ptr, std::size_t sz ) noexcept; (5) (since C++14)
                                                                                  void operator delete[]( void* ptr, std::size_t sz ) noexcept; (6) (since C++14)

                                                                                  5-6) Called instead of (1-2) if a user-defined replacement is provided, except that it's unspecified whether (1-2) or (5-6) is called when deleting objects of incomplete type and arrays of non-class and trivially-destructible class types. A memory allocator can use the given size to be more efficient. The standard library implementations are identical to (1-2).

                                                                                  (from https://en.cppreference.com/w/cpp/memory/new/operator_delete)

                                                                                  Looking at ArduinoCore-avr's source, these are actually present, and defined as follows:

                                                                                  #if __cplusplus >= 201402L
                                                                                  void operator delete(void* ptr, std::size_t size) noexcept {
                                                                                    operator delete(ptr);
                                                                                  }
                                                                                  void operator delete[](void * ptr, std::size_t size) noexcept {
                                                                                    operator delete[](ptr);
                                                                                  }
                                                                                  #endif // __cplusplus >= 201402L
                                                                                  

                                                                                  However, it seems like there hasn't been a new release of ArduinoCore-avr in a while, and the last release predates this (relatively recent) code.

                                                                                  After adding the above definition to my code myself, it compiles :)

                                                                                  Source https://stackoverflow.com/questions/69403853

                                                                                  QUESTION

                                                                                  pure css html tabs the click does not change
                                                                                  Asked 2021-Aug-16 at 14:33

                                                                                  I created these cards in pure css and html I don't want to use javascript, but I don't understand why it doesn't work for me can you help me solve this problem of mine? thank you

                                                                                  .tabs {
                                                                                    display: flex;
                                                                                    flex-wrap: wrap;
                                                                                  }
                                                                                  
                                                                                  .tabs label {
                                                                                    order: 1;
                                                                                    firstdisplay: block;
                                                                                    padding: 1rem 2rem;
                                                                                    margin-right: 0.2rem;
                                                                                    cursor: pointer;
                                                                                    background: #f9f9f9;
                                                                                    font-weight: bold;
                                                                                    transition: background ease 0.2s;
                                                                                    border-radius: 15px
                                                                                  }
                                                                                  
                                                                                  .tabs .tab {
                                                                                    order: 99;
                                                                                    astflex-grow: 1;
                                                                                    width: 100%;
                                                                                    display: none;
                                                                                    padding: 1rem;
                                                                                    background: #fff;
                                                                                  }
                                                                                  
                                                                                  .tabs input[type="radio"] {
                                                                                    display: none;
                                                                                  }
                                                                                  
                                                                                  .tabs input[type="radio"]:checked+label {
                                                                                    background: #fff;
                                                                                    border-bottom: 1px solid #e2e2e2;
                                                                                  }
                                                                                  
                                                                                  .tabs input[type="radio"]:checked+label+.tab {
                                                                                    display: block;
                                                                                  }
                                                                                  
                                                                                  @media (max-width: 45em) {
                                                                                    .tabs .tab,
                                                                                    .tabs label {
                                                                                      order: initial;
                                                                                    }
                                                                                    .tabs label {
                                                                                      width: 100%;
                                                                                      margin-right: 0;
                                                                                      margin-top: 0.2rem;
                                                                                    }
                                                                                  }
                                                                                  
                                                                                  .tabp {
                                                                                    line-height: 25px;
                                                                                    text-align: left;
                                                                                    padding: 5px;
                                                                                    font-size: 15px;
                                                                                  }
                                                                                  
                                                                                  ```
                                                                                  
                                                                                    
                                                                                      
                                                                                    
                                                                                  • Tabella Uno
                                                                                  • Tabella Due
                                                                                  • Tab Tre
                                                                                  Description

                                                                                  Lorem ipsum dolor sit amet, consectetur adipisicing elit.

                                                                                  Specification

                                                                                  Lorem ipsum dolor sit amet, consectetur adipisicing elit.

                                                                                  Reviews ( 2 )

                                                                                  Lorem ipsum dolor sit amet, consectetur adipisicing elit.

                                                                                  ANSWER

                                                                                  Answered 2021-Aug-16 at 14:33

                                                                                  You need to put radio inputs above tabs (you can hide them), so you can select tabs, also use id's for showing particular tabs:

                                                                                  .tabs {
                                                                                    display: flex;
                                                                                    flex-wrap: wrap;
                                                                                  }
                                                                                  
                                                                                  .tabs label {
                                                                                    order: 1;
                                                                                    display: block;
                                                                                    padding: 1rem 2rem;
                                                                                    margin-right: 0.2rem;
                                                                                    cursor: pointer;
                                                                                    background: #f9f9f9;
                                                                                    font-weight: bold;
                                                                                    transition: background ease 0.2s;
                                                                                    border-radius: 15px
                                                                                  }
                                                                                  
                                                                                  .tab {
                                                                                    order: 99;
                                                                                    flex-grow: 1;
                                                                                    width: 100%;
                                                                                    display: none;
                                                                                    padding: 1rem;
                                                                                    background: #fff;
                                                                                  }
                                                                                  
                                                                                  .tabs input[type="radio"] {
                                                                                    display: none;
                                                                                  }
                                                                                  
                                                                                  .tabs input[type="radio"]:checked+label {
                                                                                    background: #fff;
                                                                                    border-bottom: 1px solid #e2e2e2;
                                                                                  }
                                                                                  /* ADDED */
                                                                                  input[type="radio"] {
                                                                                    display: none;
                                                                                  }
                                                                                  #tabone:checked ~ .tab-content #tabone,
                                                                                  #tabtwo:checked ~ .tab-content #tabtwo ,
                                                                                  #tabthree:checked ~ .tab-content #tabthree {
                                                                                    display: block;
                                                                                  }
                                                                                  
                                                                                  @media (max-width: 45em) {
                                                                                    .tabs .tab,
                                                                                    .tabs label {
                                                                                      order: initial;
                                                                                    }
                                                                                    .tabs label {
                                                                                      width: 100%;
                                                                                      margin-right: 0;
                                                                                      margin-top: 0.2rem;
                                                                                    }
                                                                                  }
                                                                                  
                                                                                  .tabp {
                                                                                    line-height: 25px;
                                                                                    text-align: left;
                                                                                    padding: 5px;
                                                                                    font-size: 15px;
                                                                                  }
                                                                                  
                                                                                    
                                                                                      
                                                                                      
                                                                                      
                                                                                      
                                                                                    
                                                                                  • Tabella Uno
                                                                                  • Tabella Due
                                                                                  • Tab Tre
                                                                                  Description

                                                                                  Lorem ipsum dolor sit amet, consectetur adipisicing elit.

                                                                                  Specification

                                                                                  Lorem ipsum dolor sit amet, consectetur adipisicing elit.

                                                                                  Reviews ( 2 )

                                                                                  Lorem ipsum dolor sit amet, consectetur adipisicing elit.

                                                                                  Source https://stackoverflow.com/questions/68804117

                                                                                  QUESTION

                                                                                  Check if a field is empty and get value from another column
                                                                                  Asked 2021-Aug-13 at 19:47

                                                                                  I have a database with this structure

                                                                                  table_translations

                                                                                  name cat text_en text_es text_pt text_fr item1 01 one uno un un item1 02 one_B uno_b un_b item2 01 two dos dois deux item3 01 one uno item4 01 four quatre

                                                                                  table1_items

                                                                                  name cat column1 column2 column3 item1 01 c-1 c-2 c-3 item3 01 c-1 c-2 c-3

                                                                                  table2_items

                                                                                  name cat column1 column2 column3 item1 01 c-1 c-2 c-3 item2 01 c-1 c-2 c-3

                                                                                  With this query I get the translations for each table_items (there are several table_items):

                                                                                  SELECT * 
                                                                                  FROM table1_items, table_translations 
                                                                                  WHERE table_translations.name =  table1_items.name
                                                                                    AND table_translations.cat = table1_items.cat;
                                                                                  
                                                                                  name cat column1 column2 column3 text_en text_es text_pt text_fr item1 01 c-1 c-2 c-3 one uno un un item3 01 c-1 c-2 c-3 one uno

                                                                                  However, I would like check if the translation_"language" is empty, then select the value from translation_en. Is that possible?

                                                                                  name cat column1 column2 column3 text_en text_es text_pt text_fr item1 01 c-1 c-2 c-3 one uno un un item3 01 c-1 c-2 c-3 one uno one one

                                                                                  ANSWER

                                                                                  Answered 2021-Aug-13 at 13:22

                                                                                  Hmmm . . . you can use coalesce():

                                                                                  SELECT i.*,
                                                                                         t.text_en,
                                                                                         coalesce(t.text_es, t.text_en) as text_es,
                                                                                         coalesce(t.text_pt, t.text_en) as text_pt,
                                                                                         coalesce(t.text_fr, t.text_en) as text_fr
                                                                                  FROM table1_items i JOIN
                                                                                       table_translations t
                                                                                       ON t.name =  i.name AND t.cat = i.cat;
                                                                                  

                                                                                  If NULL can mean the empty string, then you can use NULLIF():

                                                                                  SELECT i.*,
                                                                                         t.text_en,
                                                                                         coalesce(nullif(t.text_es, ''), t.text_en) as text_es,
                                                                                         coalesce(nullif(t.text_pt, ''), t.text_en) as text_pt,
                                                                                         coalesce(nullif(t.text_fr, ''), t.text_en) as text_fr
                                                                                  

                                                                                  Source https://stackoverflow.com/questions/68771823

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