Re: Needed : set class for Cocoa
Re: Needed : set class for Cocoa
- Subject: Re: Needed : set class for Cocoa
- From: Quincey Morris <email@hidden>
- Date: Thu, 5 Feb 2009 15:59:52 -0800
On Feb 5, 2009, at 15:29, Tommy Nordgren wrote:
Do anyone know of a set container class for Cocoa objects, that use
pointer semantics.
Like this:
NSMutableString * s1 = [@"Hello" mutableCopy], * s2 = [@"Hello"
mutableCopy];
Somesetclass *someSet = [[Somesetclass alloc]init];
[someSet add:s1];
[someSet add: s2];
// After these calls, someSet should contain 2 elements because s1 !
= s2 by pointer semantics
You could try:
http://developer.apple.com/documentation/Cocoa/Reference/NSHashTable_class/Introduction/Introduction.html
with maybe 'NSPointerFunctionsStrongMemory |
NSPointerFunctionsOpaquePersonality' for the options.
Alternatively, you can use NSSet with values "encoded" by [NSValue
valueWithPointer: someObject], and "decoded" by [someValueObject
pointerValue].
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