è¦å‘Šã€ŒPerformSelector may cause a leak because its selector is unknownã€ã¸ã®å¯¾å‡¦ - 甘ã„ã‚‚ã®ãŒå¥½ãã§ã™ã‚»ãƒ¬ã‚¯ã‚¿ã‚’指定ã—ã¦ã‚ªãƒ–ジェクトã«ãƒ¡ãƒƒã‚»ãƒ¼ã‚¸ã‚’é€ã‚‹å‡¦ç†ã«ã¤ã„ã¦ã€‚ SEL sel = @selector(doSomething); if ([obj respondsToSelector:sel]) { [obj performSelector:sel]; } ã“ã®ã‚ˆã†ãªã‚³ãƒ¼ãƒ‰ã‚’ビルドã™ã‚‹ã¨ã€ARC有効時ã«performSelector:ã®è¡Œã«ã¤ã„ã¦æ¬¡ã®è¦å‘ŠãŒå‡ºã‚‹ã€‚ PerformSelector may cause a leak because its selector is unknown 指示å@selectorã«ã‚ˆã‚Šã‚»ãƒ¬ã‚¯ã‚¿ã‚’指定ã™ã‚‹ã®ã§ã¯ãªãSEL型変数を使用ã™ã‚‹å ´åˆã«ã®ã¿è¦å‘ŠãŒå‡ºã‚‹ã€‚実際ã€æ¬¡ã®ã‚ˆã†ãªå ´åˆã«ã¯è¦å‘Šã¯å‡ºãªã„。 if ([obj respondsToSelector:@selector(doSomething)]) { [obj doSomething]; } if
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