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Creating an empty file in C#
...ill release the resources as well. Close() just calls Dispose - see github.com/dotnet/coreclr/blob/master/src/mscorlib/src/System/…
– Jon Skeet
Mar 7 '16 at 14:27
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Look up all descendants of a class in Ruby
...ingleton_class instead of Class make it much faster (see source at apidock.com/rails/Class/descendants)
– brauliobo
May 9 '15 at 0:41
21
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How do I best silence a warning about unused variables?
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You can put it in "(void)var;" expression (does nothing) so that a compiler sees it is used. This is portable between compilers.
E.g.
void foo(int param1, int param2)
{
(void)param2;
bar(param1);
}
Or,
#define UNUSED(expr) do { (void)(expr); } while (0)
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void foo(int param1,...
Appending the same string to a list of strings in Python
... it to every string contained in a list, and then have a new list with the completed strings. Example:
11 Answers
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What happens to C# Dictionary lookup if the key does not exist?
I tried checking for null but the compiler warns that this condition will never occur. What should I be looking for?
9 Ans...
Composer killed while updating
...ried to install a new package to my Laravel 4 project.
But when I run php composer.phar update I get this:
14 Answers
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appearanceWhenContainedIn in Swift
...e methods are not available to Swift because Obj-C varargs methods are not compatible with Swift (see http://www.openradar.me/17302764).
I wrote a non-variadic workaround which works in Swift (I repeated the same method for UIBarItem, which doesn't descend from UIView):
// UIAppearance+Swift.h
#im...
Adjust UILabel height depending on the text
... Don't forget that sizeWithFont is deprecated in iOS 7. stackoverflow.com/questions/18897896/…
– attomos
Jan 11 '14 at 10:48
7
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How to discover number of *logical* cores on Mac OS X?
How can you tell, from the command line, how many cores are on the machine when you're running Mac OS X? On Linux, I use:
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No route matches [GET] /assets
... in the production environment. I ran RAILS_ENV=production rake assets:precompile which generated all of my assets in /public/assets. The problem is that when I start my app w/ RAILS_ENV=production rails s thin I get:
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