56
votes
10
answers
2.8K
views
Difference between npx and npm?
I have just started learning React, and Facebook helps in simplifying the initial setup by providing the follo
59
votes
28
answers
3K
views
How to set focus on an input field after rendering?
What's the react way of setting focus on a particular text field after the component is rendered? Docume
59
votes
17
answers
2.2K
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How do I conditionally add attributes to React components?
Is there a way to only add attributes to a React component if a certain condition is met? I'm supposed to
60
votes
30
answers
2.6K
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React js onClick can't pass value to method
I want to read the onClick event value properties. But when I click on it, I see something like this on the co
68
votes
11
answers
822
views
Why do we need middleware for async flow in Redux?
According to the docs, "Without middleware, Redux store only supports synchronous data flow". I don't und
51
votes
19
answers
689
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Understanding unique keys for array children in React.js
I'm building a React component that accepts a JSON data source and creates a sortable table. Each of the
53
votes
20
answers
2.7K
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Can you force a React component to rerender without calling setState?
I have an external (to the component), observable object that I want to listen for changes on. When the object
61
votes
30
answers
2.1K
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React-router urls don't work when refreshing or writing manually
I'm using React-router and it works fine while I'm clicking on link buttons, but when I refresh my w
56
votes
30
answers
342
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62
votes
28
answers
2.7K
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How to pass props to {this.props.children}
I'm trying to find the proper way to define some components which could be used in a generic way: <Pa
59
votes
17
answers
907
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What does the three dots notation do in Javascript?
What does the ... do in this React (using JSX) code and what is it called? <Modal {...this.props} title=&a
55
votes
30
answers
1K
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Loop inside React JSX
I'm trying to do something like the following in React JSX (where ObjectRow is a separate component): <
54
votes
30
answers
2.9K
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Programmatically navigate using React router
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61
votes
21
answers
2.3K
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Multiline strings in VB.NET
Is there a way to have multiline strings in VB.NET like Python a = """ multi line string """ or PHP? $a =
64
votes
4
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2.1K
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Why C# fails to compare two object types with each other but VB doesn't?
I have two objects in C# and don't know if it's Boolean or any other type. However when I try to com
54
votes
12
answers
1.4K
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Is String.Format as efficient as StringBuilder
Suppose I have a stringbuilder in C# that does this: StringBuilder sb = new StringBuilder(); string cat = "ca
54
votes
13
answers
2.8K
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.NET Configuration (app.config/web.config/settings.settings)
I have a .NET application which has different configuration files for Debug and Release builds. E.g. the debug
54
votes
7
answers
3.1K
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How to loop through all the properties of a class?
I have a class. Public Class Foo Private _Name As String Public Property Name() As String Get
63
votes
12
answers
3K
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ObservableCollection Doesn't support AddRange method, so I get notified for each item added, besides what about INotifyCollectionChanging?
I want to be able to add a range and get updated for the entire bulk. I also want to be able to cancel the ac
56
votes
12
answers
791
views
Check if a string contains an element from a list (of strings)
For the following block of code: For I = 0 To listOfStrings.Count - 1 If myString.Contains(lstOfStrings.I
