// NSArrayã®çæ NSArray *array1 = [NSArray arrayWithObjects:@"æ±äº¬", @"åå¤å±", nil]; // â mutablecopyã使ã NSMutableArray *array2 = [array1 mutableCopy]; // â¡ ãã£ã¹ãã使ã NSMutableArray *array3 = (NSMutableArray *)array1; ä¸è¨ã®äºéãã®æé ã§å¤æãããã¨ãåºæ¥ã¾ãã â¡ã¯ãã£ã¹ãããã ãã§ããã®ãå°ãå¿é ã«ãªãã¾ãããç¹ã«åé¡ãªãããã§ãã NSMutableArrayããNSArrayã¸å¤æ // NSMutableArrayã®çæ NSArray *array1 = [NSMutableArray arrayWithObjects:@"æ±äº¬", @"åå¤å±", nil]; // â copy
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