Signals | A lightweight signals and slots implementation | iOS library

 by   pbhogan C++ Version: Current License: No License

kandi X-RAY | Signals Summary

kandi X-RAY | Signals Summary

Signals is a C++ library typically used in Mobile, iOS, Framework applications. Signals has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

A lightweight "signals and slots" implementation using fast delegates. When GUI programming in C++, delegates and the signals and slots paradigm can vastly simplify your code. It implements the Observer pattern while avoiding all the boilerplate code. I needed a lightweight and efficient implementation that I could just drop into my projects and use without adding weird macros, inheriting from crazy templates or having external dependencies. I wanted something simpler and more efficient than libsigc++, sigslot, and boost.signals. So I was overjoyed when I discovered a very novel and efficient implementation of delegates in C++ and I realized I could make use of these to create a signals and slots implementation that would be very non-intrusive.
Support
    Quality
      Security
        License
          Reuse

            kandi-support Support

              Signals has a low active ecosystem.
              It has 481 star(s) with 51 fork(s). There are 25 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              There are 1 open issues and 3 have been closed. On average issues are closed in 0 days. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of Signals is current.

            kandi-Quality Quality

              Signals has no bugs reported.

            kandi-Security Security

              Signals has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

              Signals does not have a standard license declared.
              Check the repository for any license declaration and review the terms closely.
              OutlinedDot
              Without a license, all rights are reserved, and you cannot use the library in your applications.

            kandi-Reuse Reuse

              Signals releases are not available. You will need to build from source code and install.
              Installation instructions are not available. Examples and code snippets are available.

            Top functions reviewed by kandi - BETA

            kandi's functional review helps you automatically verify the functionalities of the libraries and avoid rework.
            Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of Signals
            Get all kandi verified functions for this library.

            Signals Key Features

            No Key Features are available at this moment for Signals.

            Signals Examples and Code Snippets

            No Code Snippets are available at this moment for Signals.

            Community Discussions

            QUESTION

            Django Signals set signal to create a default avatar image on UserExtended model after registering User
            Asked 2021-Jun-14 at 15:45

            I want to create an entry on UserExtended model after registering an user on Django default user model.

            here is UserExtended model:

            ...

            ANSWER

            Answered 2021-Jun-14 at 15:45

            Django does not look for any file named signal.py, etc. by default. Hence what is happening it that your signals are never registered (in fact the file you write them in is never run). The general solution to adding signals is to write them in a separate file and then import / register them in the app config's ready method.

            In the app in which you write signal.py there should be a file apps.py in which there should be a class inheriting from AppConfig edit this class and add a ready method to it and import your signals there:

            Source https://stackoverflow.com/questions/67973159

            QUESTION

            Qt. signal linked to slot of latest object
            Asked 2021-Jun-14 at 15:36

            I am creating multiple object of type QWidget_WindowContact at runtime. When I click the Increment or decrement buttons the value in the last generated object gets updated and not the value in the same object.

            I am struggling to properly link the signals and slots, so that when multiple objects of the same type are generated at runtime the signal emitted by the button coressponds to the signal in the right object.

            QWidget_WindowContact.h:

            ...

            ANSWER

            Answered 2021-Jun-11 at 14:30

            QUESTION

            How to simplify python code in for loop or another
            Asked 2021-Jun-14 at 01:49

            I have the following development which I'm working with the ElementTree and Pandas module in Python:

            ...

            ANSWER

            Answered 2021-Jun-12 at 11:23

            I hope I'm understanding the questions correctly. my understanding is that

            1. you want to dynamically produce the extract_name_value() function, and make it not as bulky in your code.

            2. Im sorry, but I failed to comprehend the for i in signal_name: print(i) part of the question. perhaps you can rephrase the question, and help me understand?

            my solution to the extract_name_value() part would be using the exec() function. it is a built-in solution for dynamic execution.

            Source https://stackoverflow.com/questions/67945289

            QUESTION

            Eliminate or Simplify repetitive Python code
            Asked 2021-Jun-13 at 23:04

            I have the following development that I am working on with the ElementTree and Pandas module in Python:

            ...

            ANSWER

            Answered 2021-Jun-13 at 23:04

            you can extract the repetitive part into its own function that take as arguments the parts that change, like for example:

            Source https://stackoverflow.com/questions/67962857

            QUESTION

            Numba: how to parse arbitrary logic string into sequence of jitclassed instances in a loop
            Asked 2021-Jun-11 at 04:07

            Tl Dr. If I were to explain the problem in short:

            1. I have signals:
            ...

            ANSWER

            Answered 2021-Jun-11 at 04:07

            Following code adds a memory to the signals which can be wiped using MultiSig.reset() to reset the count of all signals to 0. The memory can be queried using MultiSig.query_memory(key) to return the number of hits for that signal at that time.

            For the memory function to work, I had to add unique keys to the signals to identify them.

            Source https://stackoverflow.com/questions/67650037

            QUESTION

            Multiple Core Usage/Parallelize Map Function for an RQA
            Asked 2021-Jun-10 at 09:47

            I am currently trying to run a windowed CRQA in R using heart and respiration waveform signals. I have to run 94 windowed CRQA, where each signal has 20000 - 50000 data points. Hence the computational load is relatively high and takes forever. Therefore I am trying to get R to increase the memory size and use multiple cores. Both this does not seem to work with the folllowing code:

            ...

            ANSWER

            Answered 2021-Jun-10 at 09:47

            You need to use clusterMap() or another function from the parallel package rather than base::Map.

            Look those options up with: ?parallel::clusterMap.

            You are also currently mixing things up by introducing registerDoParallel(cl), which is from the foreach package. That would require you to then use foreach() and its helper %dopar%. If you do not use foreach() then you do not need registerDoParallel(cl).

            The relevant part of your code would look something like this with clusterMap(). I've tidied it a bit but I can't test it on my machine.

            Source https://stackoverflow.com/questions/67916760

            QUESTION

            Is there any way to listen to mouse::enter signal for awful.menu
            Asked 2021-Jun-09 at 15:41

            I've recently started to use and customize awesomewm, and I'm really happy with how all components work together and with the related documentation.

            Though I'm sometimes really disturbed when using the menu (awful.menu) and it's nature to block some actions. So I've wanted to add listener to the mouse::enter and mouse::leave signal to allow the widget to hide itself once the mouse leaves the widget area.

            Something like:

            ...

            ANSWER

            Answered 2021-Jun-09 at 15:41

            The menu is a complicated object. You can dig in its internal and access menu.wibox:connect_signal("mouse::enter", function() end), but this is only the top-level wibox. Submenus generate their own menu instance and they only create that dynamically.

            Thus, there is no easy way to connect signals like this, sorry.

            Source https://stackoverflow.com/questions/67889124

            QUESTION

            Efficient algorithm to reduce peak power from multiple pwm output?
            Asked 2021-Jun-08 at 00:39

            I have multiple power mosfet pwm controlled and connected to a single main power supply. Thee pwm signals operate all at the same frequency and their duty factor is determined otherwise and can change frequently. It can can vary between 0 and 100%. My PWM controller allows me to choose On time and off time independently for each signal.

            I am looking for an efficient algorithm to determine the on time of each channel in order to minimize the peak power drawn from the power supply.

            A trivial example: With 10 mosfet each one with a 10% duty factor the optimal solution will be to turn on each mosfet one at a time in sequence.

            Any ideas out there on how to address this problem? Thanks

            ...

            ANSWER

            Answered 2021-Jun-08 at 00:39

            Let the pulse width fractions (between 0 and 1) be p1, ..., pn. Let s0 = 0 and sn = sn−1 + pn be the prefix sums. Signal i should turn on at times si−1 mod 1 and end at times si mod 1.

            This algorithm does what you want on the trivial example, since s0, s1, ..., sn−1, sn = 0, 1/10, ..., 9/10, 0.

            For a less trivial example, suppose that we have signals at 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%. Then the pulses look like

            Source https://stackoverflow.com/questions/67874307

            QUESTION

            Is it possible to use pthread conditon variable (pthread_mutex and pthread_cond_t )with multiple conditons?
            Asked 2021-Jun-07 at 18:19

            I have a multithreaded program and eacch thread focuses on its own work. When a thread finishes its work, it will drive the event to the main thread.

            So I want to use the pthread condition variable to implement the idea (i.e. pthread_cond_t and pthread_mutex_t). The data structure will be like:

            ...

            ANSWER

            Answered 2021-Jun-07 at 18:19

            Yes, you can safely wait on a "compound predicate," where one signal means "this state changed or that state changed or some other state changed or ..."

            In your case, those states are the event_v flags you set. Presuming your main thread is in a loop, and that the event_v flags are initialized to false, it'd look something like this:

            Source https://stackoverflow.com/questions/67868938

            QUESTION

            16 to 1 mux using 2 to 1 mux in vhdl
            Asked 2021-Jun-07 at 14:44

            I'm trying to write a code in vhdl to create a 16 to 1 mux using 2 to 1 mux. I actually thought that to do this we may need 15 two to one multiplexers and by wiring them together and using structural model I wrote the code below. First I wrote a 2 to 1 mux:

            ...

            ANSWER

            Answered 2021-Jun-06 at 23:54

            Virtual component binding using component declarations can either be explicit using a configuration specification to supply a binding indication, or rely on a default binding indication.

            A default binding indication would rely on finding an entity declared in a reference library whose name matches the component name. That's not the case here, your entity is named MUX_2_1 (case insensitive) while the component name is mux2to1.

            It's not illegal to have components unbound in VHDL, it's the equivalent of not loading a component in a particular location in a printed circuit or bread board, it simply produces no output which shows in simulation here as a 'U'.

            Here the solutions could be to either change the name of the entity in both the entity declaration and it's architecture from MUX_2_1 to mux2to1, change the component declaration to MUX_2_1 or provide a configuration specification providing an explicit binding indication as a block declarative item in the architecture for mux16to1 of the form

            Source https://stackoverflow.com/questions/67859809

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install Signals

            You can download it from GitHub.

            Support

            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
            Find more information at:

            Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items

            Find more libraries
            CLONE
          • HTTPS

            https://github.com/pbhogan/Signals.git

          • CLI

            gh repo clone pbhogan/Signals

          • sshUrl

            git@github.com:pbhogan/Signals.git

          • Stay Updated

            Subscribe to our newsletter for trending solutions and developer bootcamps

            Agree to Sign up and Terms & Conditions

            Share this Page

            share link

            Explore Related Topics

            Consider Popular iOS Libraries

            swift

            by apple

            ionic-framework

            by ionic-team

            awesome-ios

            by vsouza

            fastlane

            by fastlane

            glide

            by bumptech

            Try Top Libraries by pbhogan

            InControl

            by pbhoganC#

            scrypt

            by pbhoganC

            TinyJSON

            by pbhoganC#

            sterile

            by pbhoganRuby

            UnitTestPlusPlus

            by pbhoganC