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zarochintsev/Design-Pattern-Singleton.m

Created June 21, 2019 14:08
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Design-Pattern-Singleton.m
#import "Singleton.h"
@implementation Singleton
+ (id)shared {
static Singleton *shared = nil;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
shared = [[self alloc] init];
});
return shared;
}
@end
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