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How do I check if a variable exists?
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and how do you turn the name of variable that possibly doesn't exist into a string?
– SilentGhost
May 9 '09 at 13:27
16
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How to find the Number of CPU Cores via .NET/C#?
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@KevinKibler From the question, I suspect the OP doesn't understand the difference, and if you don't know the difference this is probably what you want.
– Glenn Maynard
Jun 15 '14 at 15:45
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check if jquery has been loaded, then load it if false
Does anyone know how to check if jquery has been loaded (with javascript) then load it if it hasnt been loaded.
10 Answers
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What's the “Content-Length” field in HTTP header?
What does it mean?
9 Answers
9
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Drop shadow for PNG image in CSS
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Dudley Storey is right. Without the SVG, the shadow doesn't appear in Firefox. @AntonAL could accept this answer.
– javsmo
Oct 15 '13 at 21:22
5
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How to add a button to a PreferenceScreen?
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actually this does not display a button at all, which will confuse the user and isn't what the OP asked. correct answer to actually show a button is Nicolas's.
– mutable2112
May 5 '15 at 18:10
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How to run a class from Jar which is not the Main-Class in its Manifest file
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if(entryPoint==null){
// throw exception, entry point doesn't exist
}
final String[] argsCopy =
args.length > 1
? Arrays.copyOfRange(args, 1, args.length)
: new String[0];
entryPoint.getMethod("main", String[...
Detect if device is iOS
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Just a note - the navigator.platform array doesn't work on the iPad Simulator because it has the entire phrase "iPad Simulator" in the platform string.
– Kevin Newman
Jan 10 '14 at 5:39
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How do I specify new lines on Python, when writing on files?
...os.linesep will be "\r\n". When you are writing to a file in text mode, it does newline translation as it writes; that is, each "\n" in the output will be translated to "\r\n" in the resulting file. You can see how this is a problem if the text that you're writing already contains "\r\n" sequences: ...
Is int[] a reference type or a value type?
...erits from System.Object. So just because Array derives from System.Object does not mean it's a reference type. What makes System.Array a reference type is that it's instances are copied by reference. IOW, concentrate on the fact that System.Array is a class. That is what makes it a reference type....