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What's the right way to pass form element state to sibling/parent elements?
... in your root component? I can't speak for the creators of React, but generally, I find this to be a proper solution.
Maintaining state is one of the reasons (at least I think) that React was created. If you've ever implemented your own state pattern client side for dealing with a dynamic UI that ...
Basic example of using .ajax() with JSONP?
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JSONP is really a simply trick to overcome XMLHttpRequest same domain policy. (As you know one cannot send AJAX (XMLHttpRequest) request to a different domain.)
So - instead of using XMLHttpRequest we have to use script HTMLl tags, the...
How do you specify the Java compiler version in a pom.xml file?
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Generally you don't want to value only the source version (javac -source 1.8 for example) but you want to value both the source and the target version (javac -source 1.8 -target 1.8 for example).
Note that from Java 9, you have a ...
What is a stream?
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A stream represents a sequence of objects (usually bytes, but not necessarily so), which can be accessed in sequential order. Typical operations on a stream:
read one byte. Next time you read, you'll get the next byte, and so on.
read several bytes from the stream into...
Why switch is faster than if
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Because there are special bytecodes that allow efficient switch statement evaluation when there are a lot of cases.
If implemented with IF-statements you would have a check, a jump to the next clause, a check, a jump to the next clause and so on. With switch the JV...
JSON.net: how to deserialize without using the default constructor?
... [JsonConstructor] attribute to the constructor that you want Json.Net to call.
[JsonConstructor]
public Result(int? code, string format, Dictionary<string, string> details = null)
{
...
}
It is important that the constructor parameter names match the corresponding property names of the...
How to use Git Revert
...nges to a file will often reach for revert before being told that they actually want reset.
Similarly, the revert equivalent in other VCSes is often called rollback or something similar - but "rollback" can also mean "I want to completely discard the last few commits", which is appropriate for rese...
Easiest way to pass an AngularJS scope variable from directive to controller?
...est way to pass an AngularJS scope variable from directive to controller? All of the examples that I've seen seem so complex, isn't there a way I can access a controller from a directive, and set one of it's scope variables?
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How to get different colored lines for different plots in a single figure?
...have to identify each plot with a different color which should be automatically generated by Python.
5 Answers
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Watermark / hint text / placeholder TextBox
How can I put some text into a TextBox which is removed automatically when user types something in it?
33 Answers
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