option.js | A JavaScript implementation of Scala 's Option type | Functional Programming library
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kandi X-RAY | option.js Summary
A JavaScript implementation of Scala's Option type, sort of.
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QUESTION
I'm trying to make a Twitter clone using react but I'm facing the following error.
Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: undefined. You likely forgot to export your component from the file it's defined in, or you might have mixed up default and named imports.
Check the render method of SidebarOption.
Here is my code:-
app.js
...ANSWER
Answered 2021-Mar-24 at 10:19You're not passing the Icon prop to the below ones but you're expecting to render it inside SidebarOption. You can add an additional check for whether Icon is undefined or not and based on it render the same inside SidebarOption. :-
QUESTION
The react checkbox does not do anything when it's clicked. The following code is supposed to delete each option when it's clicked but either nothing is being deleted, or if it is it isn't correctly updating the list on display.
index.js
...ANSWER
Answered 2021-Mar-15 at 21:34You have to change two points to make it work:
- you need to use the
onChangeprops on the input,checkedis be a boolean stating if the checkbox is checked or not - you need to use
this.setStateto trigger a re-render with your updated state
Here is a working demo : https://codesandbox.io/s/immutable-fast-5xu9v?file=/src/App.js.
QUESTION
My code:
...ANSWER
Answered 2021-Mar-03 at 05:15It spams new embed for each item because you're declaring and sending embed to channel inside for loop.
Also, you're using addFeilds that you can use to set multiple feilds at once by providing array of objects(with name & value) at once. Check this for reference
What I suggest is that you declare MessageEmbed before for loop and addFeild to the embed on each iteration .
QUESTION
I'm attempting to read a large dataset written in JSON into a dataframe.
a minimal working example of this dataframe:
...ANSWER
Answered 2021-Feb-11 at 22:52You can create array column from all the dataframe columns, explode it and star expand the resulting struct column :
QUESTION
I have a react server running and my purpose is to console log some data whenever there is any changes in check box.
I have two jsx file first one Todo.jsx is mapping the data and sending it to other jsx file Option.jsx which returns a JSX component and finally I am using the Todo.jsx file to display components in my app.
Todo.jsx
...ANSWER
Answered 2021-Jan-13 at 07:16Change your function like
QUESTION
I am using ASP.Net Core API and Angular as front end, where I have to enable CORS for .Net Core API, below is the code that I have tried:
...ANSWER
Answered 2020-Sep-15 at 07:28You need to just add the below code after the app.UseHttpsRedirection() in the Configure method:
QUESTION
I'm getting these errors when I run flow but not sure at all why:
...ANSWER
Answered 2020-Jun-23 at 07:08This is because you have the types first architecture enabled which means that at module boundaries must be explicitly typed before you can export it.
You can learn more about it here What is the "types first" Flow architecture?
QUESTION
I am implementing the page where a user can select between two options: Button 1 redirects to TestOption.js or Button 2 redirects to TestOption2 (currently, TestOption is used for testing purposes). The default page is SelectionPage.
The problem is with the Button click event. In SelectionPage, I'm using onClick={this.props.clickBtn}. When I click on the button, it opens a new page with Header only, but without Main. I assume that the problem is caused by Router that I use in Main. But I don't know how to fix it.
Could someone point me to an error?
Thanks.
The code of App.js:
...ANSWER
Answered 2020-Jun-17 at 13:36QUESTION
We are migrating a site from ASP MVC .Net Framework to .Net Core. In many cases we do ajax POST requests from the page to the Controller:
js: ...ANSWER
Answered 2020-Mar-16 at 19:48Try adding the FromBodyAttribute to your parameter:
QUESTION
in jQuery I would like to use a function for a searching, I want to use a function because I will search on several element. But when I call my function I have the error :
TypeError: i.nodeName is undefined[Learn More] jquery-3.3.1.min.js:2:67502
val jQuery
search http://localhost/js/searchOption.js:9
http://localhost/js/searchOption.js:25 dispatch2jQuery
There is my code :
...ANSWER
Answered 2019-Mar-02 at 12:18When you do:
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