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newmarcel/gist:4016847

Created November 5, 2012 11:53
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GCD-based Singleton
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gistfile1.m
+ (id)sharedManager
{
static dispatch_once_t once = 0;
static id sharedInstance = nil;
dispatch_once(&once, ^{
sharedInstance = [self alloc] init];
});
return sharedInstance;
}
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