13. å ¸åçãªå®è£ + (id)sharedInstance { static HogeManager *instance = nil; static dispatch_once_t onceToken; dispatch_once(&onceToken, ^{ instance = [[self alloc] init]; }); return instance; } ãã®ã¯ã©ã¹ã¡ã½ããã§ã®ã¿ã¢ã¯ã»ã¹ããã
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