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Is using 'var' to declare variables optional? [duplicate]
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They mean different things.
If you use var the variable is declared within the scope you are in (e.g. of the function). If you don't use var, the variable bubbles up through the layers of scope until it encounters a variable by the given name or the global object (window, if you are doing it i...
What does “javascript:void(0)” mean?
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The void operator is often used merely
to obtain the undefined primitive
value, usually using “void(0)” (which
is equivalent to “void 0”). In these
cases, the global variable undefined
can be used instead (assuming it has
not been assigned to a non-default
value).
An ex...
How do BitTorrent magnet links work?
For the first time I used a magnet link . Curious about how it works, I looked up the specs and didn't find any answers. The wiki says xt means "exact topic" and is followed by the format ( btih in this case) with a SHA1 hash. I saw base32 mentioned, knowing it's 5 bits per character and 32 char...
Hide html horizontal but not vertical scrollbar
.... I am not able to use overflow:auto due to other things specific to my situation.
8 Answers
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Visual Studio build fails: unable to copy exe-file from obj\debug to bin\debug
...ich was VERY tedious to say the least. Eventually, I tracked down the culprit, and I find it hard to believe. But I was using the following code in AssemblyInfo.cs...
[assembly: AssemblyVersion("2.0.*")]
This is pretty common, but for some reason, changing the version to 2.0.0.0 made things work ...
Is C++ context-free or context-sensitive?
I often hear claims that C++ is a context-sensitive language. Take the following example:
20 Answers
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Embedding JavaScript engine into .NET [closed]
...nt. I could find and actually use (after a LOT of pain and effort, since it's pretty outdated and not quite finished) spidermonkey-dotnet project. Anyone with experience in this area? Engines like SquirrelFish, V8..
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Can “this” ever be null in Java?
...lass method and my first reaction was to ridicule the developer that wrote it.. But then, I figured I should make sure I was right first.
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var functionName = function() {} vs function functionName() {}
... fixing bugs, adding features and also trying to tidy up the code and make it more consistent.
40 Answers
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Why is the clone() method protected in java.lang.Object?
...he fact that the clone method is not declared in the Cloneable interface.
It makes the method pretty useless for taking copies of data because you cannot say:
if(a instanceof Cloneable) {
copy = ((Cloneable) a).clone();
}
I think that the design of Cloneable is now largely regarded as a mist...