React.memo / useCallback / useMemo ã®ä½¿ã„æ–¹ã€ä½¿ã„所をç†è§£ã—ã¦ãƒ‘フォーマンス最é©åŒ–ã‚’ã™ã‚‹ - QiitaReact.memo / useCallback / useMemo ã®ä½¿ã„æ–¹ã€ä½¿ã„所をç†è§£ã—ã¦ãƒ‘フォーマンス最é©åŒ–ã‚’ã™ã‚‹JavaScriptReactreact-hooks ã¯ã˜ã‚ã« React（v16.12.0）ã®React.memoã€useCallbackã€useMemoã®åŸºæœ¬çš„ãªä½¿ã„æ–¹ã€ä½¿ã„所ã«é–¢ã—ã¦ã®å‚™å¿˜éŒ²ã§ã™ã€‚ 「React ã§ã®ãƒ‘フォーマンス最é©åŒ–ã®æ‰‹æ®µã‚’知りãŸã„〠「ãªãœReact.memoã€useCallbackã€useMemoを利用ã™ã‚‹ã®ã‹ã‚ã‹ã‚‰ãªã„〠ã¨ã„ã£ãŸäººé”å‘ã‘ã«æ›¸ã„ãŸè¨˜äº‹ã§ã™ã€‚ デモ㯠CodeSandbox 上ã«ç½®ã„ã¦ã‚ã‚Šã¾ã™ã€‚編集ã—ã¦å‹•ä½œã‚’確èªã—ã¦ã¿ã‚‹ã¨ç†è§£ãŒæ·±ã¾ã‚‹ã¨æ€ã„ã¾ã™ã€‚ 本記事ã§ç”¨ã„ã¦ã„る用語 メモ化 計算çµæžœ メモ化 計算çµæžœã‚’ä¿æŒã—ã€ãれをå†åˆ©ç”¨ã™ã‚‹æ‰‹æ³•ã®ã“ã¨ã€‚ ã‚ャッシュã®ã‚ˆã†ãªã‚‚ã®ã ã¨ã‚¤ãƒ¡ãƒ¼ã‚¸ã™ã‚Œã°è‰¯ã„ã¨æ€ã†ã€‚ ãã®ãŸã‚ã€ä»¥ä¸‹ã®è¨€è‘‰ã®æ„味ã¯
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