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What is the use of “ref” for reference-type variables in C#?
...e of the reference itself; that is, you cannot
use the same reference to allocate memory for a new class and have it
persist outside the block. To do that, pass the parameter using the
ref or out keyword.
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Is there a method that calculates a factorial in Java?
...ions with N elements requires bare factorial, and is needed if you want to allocate a structure to hold the permutations.
– Mark Jeronimus
Jan 1 '16 at 17:46
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iPhone viewWillAppear not firing
... setting up the view controllers on the respective controller (right after allocation). From then on, it correctly called these methods on its child view controllers.
My hierarchy is like this:
window
UITabBarController (subclass of)
UIViewController (subclass of) // <-- manually ca...
Remove a string from the beginning of a string
...e changed for if (0 === strpos($str, $prefix)) to avoid unnecessary memory allocation while keeping the same readability :)
– xDaizu
Feb 1 '17 at 9:17
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Convert Enum to String
...eans that the value will be boxed and this will waste CPU resources on the allocation and on the garbage collection. If this is done a lot of time, Enum.GetName will have a much lower throughput than caching the values in a dictionary and looking for the name there.
– Ran
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Create a string with n characters
...o the string.
*/
public String spaces( int spaces ) {
return CharBuffer.allocate( spaces ).toString().replace( '\0', ' ' );
}
Invoke using:
System.out.printf( "[%s]%n", spaces( 10 ) );
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Is it possible to get all arguments of a function as single object inside that function?
...uments); cant be the best way because it causes an unnecessary empty array allocation.
– Thomas Eding
Jun 22 '17 at 16:49
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How do I set bold and italic on UILabel of iPhone/iPad?
... Using the font descriptor you need no names:
UILabel * label = [[UILabel alloc] init]; // use your label object instead of this
UIFontDescriptor * fontD = [label.font.fontDescriptor
fontDescriptorWithSymbolicTraits:UIFontDescriptorTraitBold
| UIFontDescripto...
Detecting if an NSString contains…?
...thmus. It is?
NSLinguisticTagger *linguisticTagger = [[NSLinguisticTagger alloc] initWithTagSchemes:@[
NSLinguisticTagSchemeTokenType,
]
opti...
NSString tokenize in Objective-C
...": @"\u201D"};
// Scan
NSMutableArray *results = [[NSMutableArray alloc] init];
NSString *substring = nil;
while (scanner.scanLocation < searchString.length) {
// Check for quote at beginning of string
unichar unicharacter = [self characterAtIndex:scanner.scanLoca...