Re: class keeps track of object
Re: class keeps track of object
- Subject: Re: class keeps track of object
- From: Jean-Daniel Dupas <email@hidden>
- Date: Wed, 2 Jul 2008 00:43:51 +0200
search for singleton pattern (in the archives and in Apple doc too).
The simplest way to do it is (not thread safe):
@implementation Foo
+ (Bar *)sharedFoo {
static Foo *shardInstance = nil;
if (!sharedInstance)
sharedInstance = [[Foo alloc] init];
return sharedInstance;
}
@end
Le 2 juil. 08 à 00:35, Daniel Richman a écrit :
Hi All,
I have created a class (call it Foo) that there will be one and only
one instance of (call it Bar). I need some way to have Foo keep a
pointer to Bar, so when another object asks for the pointer to Bar,
Foo will be able to return the pointer.
Presumably this can be done, as NSNotificationCenter has the
defaultCenter method. But I don't know how to go about it. Any ideas?
Daniel
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