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“f” after number
...compiler may not be smart enough to convert them to float at compile time, and would slow the execution down with four int->float conversions (that are among the slowest casts). Although in this case is almost unimportant, it's always better to specify correctly f if needed: in an expression a co...
What does “where T : class, new()” mean?
...constraint on the generic parameter T. It must be a class (reference type) and must have a public parameter-less default constructor.
That means T can't be an int, float, double, DateTime or any other struct (value type).
It could be a string, or any other custom reference type, as long as it has ...
How to get an array of specific “key” in multidimensional array without looping
...since the code is open source you can copy paste the code in your project (and rename the function to something you prefer, like array_pick). View source here
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Will using 'var' affect performance?
...r I asked a question about why I see so many examples use the varkeyword and got the answer that while it is only necessary for anonymous types, that it is used nonetheless to make writing code 'quicker'/easier and 'just because'.
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XML Document to String
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and the writer.getBuffer().toString() can just be writer.toString()
– bvdb
Jun 1 '17 at 10:23
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Parse date string and change format
... @nimmyliji: it was fixed 10 minutes before you posted your comment. and of course you should have date_string as a string.
– SilentGhost
Feb 15 '10 at 11:18
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Is it valid to have a tag inside another tag?
...generated by having multiple headings in one element of sectioning content and nested <section>'s are allowed.
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How to check if a file exists in Documents folder?
... if it was a main application you'll have access to the entire file system and you'll use the shared Documents directory. If you install it via iTunes or XCode you'll be using your applications' personal directory. It's nice to store files in your local directory for backup purposes.
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Bash/sh - difference between && and ;
I normally use ; to combine more than one command in a line, but some people prefer && . Is there any difference? For example, cd ~; cd - and cd ~ && cd - seems to make the same thing. What version is more portable, e.g. will be supported by a bash-subset like Android's shell ...
Overload with different return type in Java?
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You can't do it in Java, and you can't do it in C++. The rationale is that the return value alone is not sufficient for the compiler to figure out which function to call:
public int foo() {...}
public float foo() {..}
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foo(); // which one?
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