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Creating an instance of class
... new Bar ( Foo::Foo() ); is not usual. It's usually new Bar ( (Foo()) ); - extra parenthesis account for most-vexing parse. (corrected)
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Need to understand the usage of SemaphoreSlim
...n (i.e., no FIFO priorities).
When a teacher is around, she "releases" an extra row of 5 footprints on the other side of the corridor such that 5 more kids can play in the room at the same time.
It also has the same "pitfalls" of SemaphoreSlim...
If a kid finishes playing and leaves the room with...
What does addChildViewController actually do?
...main view controller. This will soon make things complicated and create an extra dependency between unrelated components in the app.
That was in the past, before the concept of child view controllers is introduced. But now, you only need to addChildViewController to the main view controller and ev...
Styling Google Maps InfoWindow
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Props for including some extra code that I was looking for how to use. Thanks
– MetalPhoenix
Nov 18 '14 at 16:41
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Defining and using a variable in batch file
...e referenced with %location %. If that’s not what you want, remove the extra space(s) in the definition.
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Run Java Code Online [closed]
...ne is the best site for the online code running, debugging and it provides extra performance stats also.
Without Sign Up, you can run code upto of maximum 5 sec, and for signup, upto a max of 15 sec. And for Signup, the code management and history is also too good.
However, it has some maximum am...
Undo scaffolding in Rails
...p in mind that it will remove the view folder for my_foo, even if you have extra files there.
– Andrew K
Sep 2 '17 at 21:22
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Why are my balls disappearing? [closed]
...tyX);
ball2.nextY = (ball2.nextY += ball2.velocityY);
You don't need the extra assignments, and can just use the += operator alone:
ball1.nextX += ball1.velocityX;
ball1.nextY += ball1.velocityY;
ball2.nextX += ball2.velocityX;
ball2.nextY += ball2.velocityY;
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Should I use “hasClass” before “addClass”? [duplicate]
...l because jQuery will also always check from within .addClass(). It's just extra work.
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print call stack in C or C++
...tdio.h>
#include <execinfo.h>
void print_trace(void) {
char **strings;
size_t i, size;
enum Constexpr { MAX_SIZE = 1024 };
void *array[MAX_SIZE];
size = backtrace(array, MAX_SIZE);
strings = backtrace_symbols(array, size);
for (i = 0; i < size; i++)
pr...