... like this: var foo = 45; var bar = '' + foo; Actually, even though I typically do it like this for simple convenience, over 1,000s of iterations it appears for raw speed there is an advantage for .toString() See Performance tests here (not by me, but found when I went to w...

... varargs could do that (in a way). Other than that, all variables in the declaration of the method must be supplied. If you want a variable to be optional, you can overload the method using a signature which doesn't require the parameter. private boolean defaultOptionalFlagVa...

...ce "false" is a non-empty string, the test command always succeeds. To actually run the command, drop the [ command. if false; then echo "True" else echo "False" fi share | improve this answ...

...o() to the return from foo(); so it would be re-initialized to 5 on every call. The keyword static acts to extend the lifetime of a variable to the lifetime of the programme; e.g. initialization occurs once and once only and then the variable retains its value - whatever it has come to be - over al...

Basically I want to do this: 14 Answers 14 ...

I am reading a book called "Teach Yourself C in 21 Days" (I have already learned Java and C# so I am moving at a much faster pace). I was reading the chapter on pointers and the -> (arrow) operator came up without explanation. I think that it is used to call members and functions (like the eq...

...s? When I put this code in one file x.py and import it from another, then calling x.y results in AttributeError: 'NoneType' object has no attribute 'c', since _M somehow has value None... – Stephan202 May 19 '09 at 1:35 ...

...n't work : static var means that the value of the property is the same for all instance – Fry Mar 8 '17 at 15:40 @fry ...

...'s files, respectively. As a programmer, you can largely just ignore it... All it does is make your program start a little faster. When your scripts change, they will be recompiled, and if you delete the files or the whole folder and run your program again, they will reappear (unless you specificall...

C++ inherited arrays from C where they are used virtually everywhere. C++ provides abstractions that are easier to use and less error-prone ( std::vector<T> since C++98 and std::array<T, n> since C++11 ), so the need for arrays does not arise quite as often as it does in C. However, ...