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What does 'var that = this;' mean in JavaScript?
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I'm going to begin this answer with an illustration:
var colours = ['red', 'green', 'blue'];
document.getElementById('element').addEventListener('click', function() {
// this is a reference to the element clicked on
var that = this;
colours.f...
What is the “volatile” keyword used for?
...read some articles about the volatile keyword but I could not figure out its correct usage. Could you please tell me what it should be used for in C# and in Java?
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How to clear an ImageView in Android?
... ImageView s for my displays, but at some point I don't have values to put it.
17 Answers
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Git Extensions: Win32 error 487: Couldn't reserve space for cygwin's heap, Win32 error 0
Git Extensions: Everything was working fine until yesterday.
14 Answers
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Is there anything like .NET's NotImplementedException in Java?
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Commons Lang has it. Or you could throw an UnsupportedOperationException.
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Is JavaScript a pass-by-reference or pass-by-value language?
The primitive types (number, string, etc.) are passed by value, but objects are unknown, because they can be both passed-by-value (in case we consider that a variable holding an object is in fact a reference to the object) and passed-by-reference (when we consider that the variable to the object hol...
How to make junior programmers write tests? [closed]
We have a junior programmer that simply doesn't write enough tests.
I have to nag him every two hours, "have you written tests?"
We've tried:
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throwing exceptions out of a destructor
...ed behavior. Stroustrup makes the point that "the vector destructor explicitly invokes the destructor for every element. This implies that if an element destructor throws, the vector destruction fails... There is really no good way to protect against exceptions thrown from destructors, so the libra...
How to recover stashed uncommitted changes
I had some uncommitted changes in my development branch and I stashed them using git stash , but there were some changes which were very important among those stashed ones. Is there any way to get back those changes?
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Jquery - How to make $.post() use contentType=application/json?
... have to
1.Modify the source to make $.post always use JSON data type as it really is just a shortcut for a pre configured $.ajax call
Or
2.Define your own utility function that is a shortcut for the $.ajax configuration you want to use
Or
3.You could overwrite the $.post function with your ...