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Difference between declaring variables before or in loop?
I have always wondered if, in general, declaring a throw-away variable before a loop, as opposed to repeatedly inside the loop, makes any (performance) difference?
A (quite pointless) example in Java:
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ObservableCollection not noticing when Item in it changes (even with INotifyPropertyChanged)
Does anyone know why this code doesn't work:
18 Answers
18
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how to use sed, awk, or gawk to print only what is matched?
I see lots of examples and man pages on how to do things like search-and-replace using sed, awk, or gawk.
11 Answers
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SSH library for Java [closed]
Does anyone know of a good library for SSH login from Java.
7 Answers
7
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How do you compare two version Strings in Java?
Is there a standard idiom for comparing version numbers? I can't just use a straight String compareTo because I don't know yet what the maximum number of point releases there will be. I need to compare the versions and have the following hold true:
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How to convert a std::string to const char* or char*?
How can I convert an std::string to a char* or a const char* ?
8 Answers
8
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How do I get bit-by-bit data from an integer value in C?
I want to extract bits of a decimal number.
8 Answers
8
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Can a Windows batch file determine its own file name?
Can a Windows batch file determine its own file name?
6 Answers
6
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How do I ZIP a file in C#, using no 3rd-party APIs?
I'm pretty sure this is not a duplicate so bear with me for just a minute.
7 Answers
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Razor HtmlHelper Extensions (or other namespaces for views) Not Found
Dunno if this was happening in the PR or Beta, but if I create an extension method on HtmlHelper , it is not recognized in a Razor powered page:
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