ARC ã®æœ‰åŠ¹ï¼ç„¡åŠ¹ã‚’ファイルã”ã¨ã«è¨å®šã™ã‚‹æ–¹æ³• - ãã®å¾Œã®ãã®å¾Œãƒ—ãƒã‚¸ã‚§ã‚¯ãƒˆå…¨ä½“ã§ARCを有効ã«ã—ãŸçŠ¶æ…‹ã§ã€ä¸€éƒ¨ãƒ•ã‚¡ã‚¤ãƒ«ã‚’無効ã«ã—ãŸã„å ´åˆã¯ã€ 1. プãƒã‚¸ã‚§ã‚¯ãƒˆè¨å®šç”»é¢ã®Build Phasesタブを開ã 2. ARCを無効ã«ã—ãŸã„ファイルをã¾ã¨ã‚ã¦é¸æŠž 3. リターンã‚ーを押ã™ã¨ãƒ€ã‚¤ã‚¢ãƒã‚°ãƒœãƒƒã‚¯ã‚¹ãŒå‡ºã¦ãã‚‹ã®ã§ã€"-fno-objc-arc"ã¨ã„ã†ã‚³ãƒ³ãƒ‘ã‚¤ãƒ©ãƒ•ãƒ©ã‚°ã‚’è¿½åŠ ã™ã‚‹ã€‚ 逆ã«ã€ä¸€éƒ¨ãƒ•ã‚¡ã‚¤ãƒ«ã ã‘有効ã«ã—ãŸã„å ´åˆã¯ã€ãƒ—ãƒã‚¸ã‚§ã‚¯ãƒˆå…¨ä½“ã§ARCを無効ã«ã—ãŸçŠ¶æ…‹ã§ã€"-fobjc-arc"ãƒ•ãƒ©ã‚°ã‚’è¿½åŠ ã—ã¾ã™ã€‚ å‚考ページ http://stackoverflow.com/questions/6308425/ios-5-best-practice-release-retain/ http://ios.biomsoft.com/2011/12/24/migrating-your-code-to-objective-c-arc/
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