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Hidden Features of MySQL
...le resource when setting these parameters. For example sort_buffer_size is allocated only if MySQL needs to do a sort. Note: be careful not to run out of memory.
If you have many connects established (i.e. a web site without persistent connections) you might improve performance by setting thread_ca...
What is a NullPointerException, and how do I fix it?
...e initialize like this:
private static String[] foo = new String[2];
we allocate a String[] with two elements that are initialized to null. After that, we have not changed the contents of foo ... so foo[1] will still be null.
...
Why would finding a type's initializer throw a NullReferenceException?
...looking. You're absolutely right, what happens is that because we directly allocate an instance of RuntimeType the cctor of Type never gets called, so Type.EmptyTypes remains null and that's what is passed to GetConstructor.
– Kirill Osenkov
Jul 25 '12 at 6:30
...
Is quitting an application frowned upon?
...g games which use native code. Killing the process means releasing all the allocated memory back to the system, immediately.
– Sulthan
Apr 6 '12 at 9:32
10
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Why do we need private subnet in VPC?
...ince you need half as many subnets, you could choose to use a smaller CIDR allocation for your VPC or you could make bigger subnets with the same size VPC. And fewer subnets means you'll be paying less for inter-AZ traffic as well.
So, why don't we do this? Why does AWS say the best practice is to ...
Proper use of the IDisposable interface
...
}
And you're done. Except you can do better.
What if your object has allocated a 250MB System.Drawing.Bitmap (i.e. the .NET managed Bitmap class) as some sort of frame buffer? Sure, this is a managed .NET object, and the garbage collector will free it. But do you really want to leave 250MB of ...
Pretty-print C++ STL containers
...you do actually include the headers.
template<typename T, typename TAllocator> class vector;
template<typename T, typename TAllocator> class list;
template<typename T, typename TTraits, typename TAllocator> class set;
template<typename TKey, typename TValue, type...
How to make an OpenGL rendering context with transparent background?
...eg. IRIX */
cmap = XCreateColormap(Xdisplay, Xroot, visual->visual, AllocNone);
attr.colormap = cmap;
attr.background_pixmap = None;
attr.border_pixmap = None;
attr.border_pixel = 0;
attr.event_mask =
StructureNotifyMask |
EnterWindowMask |
LeaveWi...
Functional, Declarative, and Imperative Programming [closed]
...perative IO monad (note: not all monads are imperative!) implicit in space allocation, and timing is state relative to the imperative real world. Using lazy even with optional eager coproducts leaks "laziness" into inner coproducts, because with lazy the laziness incorrectness originates from the ou...
Repeat String - Javascript
...even a single character to a string requires creation of, including memory allocation for and copying to, an entire new string.
Unfortunately, the accepted answer on this page is wrong, where "wrong" means by a performance factor of 3x for simple one-character strings, and 8x-97x for short strings ...