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Objective-C for Windows
...h>
int main(void)
{
NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
NSLog(@"Hello World!.");
[pool drain];
return;
}
Go back to the command prompt and cd to where you saved the "Hello World" program and then compile it:2
gcc -o helloworld.exe <HELLOWORLD>.m -I /...
What can you use Python generator functions for?
...on't know if you are going to need all results, or where you don't want to allocate the memory for all results at the same time. Or for situations where the generator uses another generator, or consumes some other resource, and it's more convenient if that happened as late as possible.
Another use ...
nil detection in Go
...
In addition to Oleiade, see the spec on zero values:
When memory is allocated to store a value, either through a declaration or a call of make or new, and no explicit initialization is provided, the memory is given a default initialization. Each element of such a value is set to the zero valu...
How does the “final” keyword in Java work? (I can still modify an object.)
...ed than checking whether a variable is final. Mutable objects can be stack-allocated as well. final fields may help the escape analysis, though, but that's a quite indirect route. Also note that effectively final variables have identical treatement as those marked final in the source code.
...
How do I remove diacritics (accents) from a string in .NET?
...
You should preallocate the StringBuilder buffer to the name.Length to minimize memory allocation overhead. That last Split/Join call to remove sequential duplicate _ is interesting. Perhaps we should just avoid adding them in the loop. Se...
Default implementation for Object.GetHashCode()
...mber defined in System.ValueType or System.Enum types [may] cause a boxing allocation [...]
An implementer of a hash function faces a dilemma: make a good distribution of the hash function or to make it fast. In some cases, it's possible to achieve them both, but it is hard to do this generically in...
Enabling auto layout in iOS 6 while remaining backwards compatible with iOS 5
...Storyboard instantiateInitialViewController];
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
self.window.rootViewController = self.initialViewController;
[self.window makeKeyAndVisible];
return YES;
}
@end
Having 2 targets works aswell but seems li...
Overloading member access operators ->, .*
...ays overloaded, or overloading rules don't really apply to it (13.5/5: The allocation and deallocation functions, operator new, operator new[], operator delete and operator delete[], are described completely in 3.7.4. The attributes and restrictions found in the rest of this subclause do not apply t...
Generate random numbers uniformly over an entire range
...a thread_local: the generator is quite plump (> 2 KB) and is better not allocated on the stack
seed mt19937 with more than one integer: the Mersenne Twister has a big state and can take benefit of more entropy during initialization
Some not-so-good choices
The C++11 library
While being the m...
Do I cast the result of malloc?
... someone suggested in a comment that I should not cast the result of malloc , i.e.
29 Answers
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