arrow2 | Transmute-free Rust library to work with the Arrow format
kandi X-RAY | arrow2 Summary
kandi X-RAY | arrow2 Summary
A Rust crate to work with Apache Arrow. The most feature-complete implementation of the Arrow format after the C++ implementation. Check out the guide for a general introduction on how to use this crate, and API docs for a detailed documentation of each of its APIs.
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arrow2 Examples and Code Snippets
Community Discussions
Trending Discussions on arrow2
QUESTION
I have map with units and names.
...ANSWER
Answered 2021-May-12 at 05:38first, you have to convert your Map to a list then create a list of dropDownMenuItem and then send it over to dropdown widget
for example in the code below provinces is a list and provincesItems is a List of dropdownMenueItem, i fill provincesItems with items I desire from provinces list and then send it over to dropDown Widget
QUESTION
I have a button and a div in a ngfor loop and I want each button to be able to show and hide the div each time i click on it the problem is that I don't already know the number of buttons and div it depends on the data in my database. just want every button to be responsible on the div next to it:
here is the code:
...ANSWER
Answered 2021-Mar-22 at 11:45Yuo can use for show and hide div
*ngIf
QUESTION
I'm currently making an app with Flask and I'm running into some issues. So the app, for now, is a very simple online clicker game where you can click a button at the center of the screen.
I've also implemented a system where the browser tracks the number of times the user clicked on the central button. Here is the full HTML code for the main game screen:
...ANSWER
Answered 2021-Jan-17 at 21:46Right now you are storing all your clicks in the localStorage but this only saves the clicks of the local user on their local device. In order to have a leaderboard, you will need to implement a backend with a database of some sort to store users and the number of clicks they have. If you are familiar with backend languages like NodeJS or PHP and SQL then you can figure something out from that, or if you would prefer to keep it all in JavaScript I know Google Firebase Realtime Database or Firebase Firestore are both viable options that work with JavaScript and require very little backend knowledge.
What you would need to do in either of those scenarios is collect a unique identifier of each user (like a name or email) and then store the number of clicks they have.
Since you just said in the comments that you want it to be on a single device, again I would suggest collecting an identifying piece of information like a name so that you can store that in localStorage along with their click count, and when they come back to the website they can just put in the same information and continue where you left off. But this would only work on one person's device.
QUESTION
Within my Grid I have the following StackPanel:
ANSWER
Answered 2020-Nov-19 at 12:08A StackPanel by definition stacks elements vertically from top to bottom or horizontally from left to right (or right to left with FlowDirection="RightToLeft") depending on its Orientation.
Arranges child elements into a single line that can be oriented horizontally or vertically.
That is all it does, it does not take into account proportional sizes based on the available space. A Grid on the other hand has columns and rows that can take advantage of star sizing to achieve exactly that.
Columns and rows that are defined within a Grid can take advantage of Star sizing to distribute remaining space proportionally. When Star is selected as the height or width of a row or column, that column or row receives a weighted proportion of the remaining available space.
In your case you may not even need a StackPanel. You could just place your Border directly inside the Grid and set its VerticalAlignment and HorizontalAligment properties accordingly e.g:
QUESTION
I am making a on js "True or False" game. Assertion titles appear on the screen one by one. The user responds to each statement in turn. There are 5 statements in total. - If the user clicked on the False button then the following statement appears. And if it's true then a description appears. You can go to the next question by clicking on the white circle under the headings, which turns into red if an answer has already been given to it (any) or by clicking on further.
What is the best way to make the questions change without reloading the page and make the navigation circles are active in pure js? The available code and an approximate view of the functionality are below:
...ANSWER
Answered 2020-Oct-22 at 09:35This is a very broad question, but I'm gonna try and answer it by breaking it down a bit. There's actually three issues in this question.
- How do i display information from JS in the DOM?
- How can i act on a button press to update this information?
- How can we track which questions was answered?
Let's start with issue #1: For a task like this it helps making the question structure in JavaScript or JSON first. Every question has 4 pieces of information: statement, description, correctAnswer, answer.
We also need to create a function that handles assigning the values into the DOM. In this example we will call it selectTask(id) we're gonna run this on launch.
For Issue #2 we can reuse the selectTask(id) function to display the next answer, but we should add another function called answer(value) which takes what you've answered as an argument, this function sets the answer field of your statement object and calls selectTask for the next task. To run JS function you can use "onclick".
Finally, for issue #3, we have to apply some styling to the overview buttons to indicate which are correct or false, and whether they're answered at all. Luckily we have our answer field for each task already so we can use this. I also added selectTask in the onclick of each of the overview buttons to enable navigation back and forth.
QUESTION
I want to add an arrow (some object) upon the press of a button. The code is a modified version of the example given in the vispy repository.
...ANSWER
Answered 2020-Oct-02 at 16:50Following the suggestions of @djhoese and @RolfofSaxony, I have updated the code. The code now successfully adds an arrow upon clicking the button.
QUESTION
I'm trying to expand the Connected Objects demo by allowing two nodes (shapes of Circle class) to be double referenced (A connects to B with Arrow1 and B connects to A with Arrow2). I work with react-konva package.
I have implemented a demo on Code Sandbox with some basic functionality.
On line 5, 6 you'll find the Nodes info, on line 21 there exists a high-order component that creates the Arrow based on the start Node and end Node position.
In the default example, the arrows are working as expected. If you try to set the value of redNode.x to 300 the arrows overlap. The same happens when blueNode.x is equal to -100. This has something to do with the way I calculate the arrows (I suspect the equations on line 38).
Also note that as redNode.x moves to value 300, the two arrows approach each other (this happens on other values too), which is something I do not want to happen. I expect the arrows to have the same shape when the two nodes change position and not to overlap or approach each other. Unfortunately, my lack of mathematics does not help me solve the problem. I also tried to create a custom shape using quadraticCurveTo method without success.
Thanks in advance for the help. I appreciate all the solutions.
...ANSWER
Answered 2019-Aug-26 at 00:40There are many ways to make curved lines. Here is my attempt to make it better:
QUESTION
I really need some help. I'm having difficulties with hovering a Prev button. I want this button to roll over with the animated icon. However now, it only rollovers the animated icon, not the text. Here is a screenshot of the button, HTML and CSS code below. Thank you!
Button state now https://vimeo.com/394493039
...ANSWER
Answered 2020-Mar-03 at 00:09You're using too many a tags in your html. You only need one anchor tag for each link.
The result is that when you hover over any part of the link your effect will apply.
QUESTION
Following is the if statement that execute some part of the code before it checks some condition, it is working fine but it looks very basic and repeated lines.
...ANSWER
Answered 2020-Feb-20 at 09:33You can use the switch statement.
QUESTION
Inductive ty0: Type :=
| Bool : ty0
| Int : ty0
| Dyn : ty0
| Arrow0: ty0 -> ty0 -> ty0.
Inductive ty1: Type :=
| ty : ty0 -> ty1
| Inters : ty1 -> ty1 -> ty1.
Inductive ty2: Type :=
| ty': ty0 -> ty2
| Arrow2 : ty1 -> ty2 -> ty2.
Inductive consist : ty2 -> ty2 -> Prop :=
| cs_dyn1 : forall t2, consist Dyn t2
ANSWER
Answered 2020-Feb-09 at 00:25You can define a coercion from ty0 to ty2 and it will help quite a bit:
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