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Rubyã®Procã®èª¬æ˜Žã¯å··ã«æº¢ã‚Œã¦ã„ã‚‹ã‹ã‚‰ä»Šæ›´æ„ŸãŒã‚ã‚‹ã‘ã©ã“ã“数回Procを使ã£ãŸãƒã‚¿ã‚’書ã„ã¦ã„ãŸã‚‰ProcãŒã‹ã‚ã„ããªã£ã¡ã‚ƒã£ã¦ã‚‚ã£ã¨ã¿ã‚“ãªã«ã‚‚Procã®ã“ã¨çŸ¥ã£ã¦ã‚‚らã„ãŸã„ã¨ã„ã†æ¬²æ±‚ãŒç”Ÿã¾ã‚Œã¦ããŸã‹ã‚‰Procã«ã¤ã„ã¦ã®åŸºæœ¬çš„ãªã“ã¨ã‚’僕ãªã‚Šã®ã‚„ã‚Šæ–¹ã§ã“ã“ã«æ›¸ãよ。長ã„よ。 Rubyã®é–¢æ•°ï¼ˆãƒ¡ã‚½ãƒƒãƒ‰ï¼‰ Rubyã«ãŠã„ã¦é–¢æ•°ï¼ˆãƒ¡ã‚½ãƒƒãƒ‰ï¼‰ã¯ãƒ•ã‚¡ãƒ¼ã‚¹ãƒˆã‚¯ãƒ©ã‚¹ï¼ˆã‚ªãƒ–ジェクト）ã§ã¯ã‚ã‚Šã¾ã›ã‚“。ã¤ã¾ã‚Šæ–‡å—列や数å—ã‚„é…列ãªã©ã®ä»–ã®ã‚ªãƒ–ジェクトã¨ã¯ç•°ãªã£ã¦ã€Rubyã§ã¯ãれを直接変数ã«ä»£å…¥ã—ãŸã‚Šã€ä»–ã®é–¢æ•°ã«æ¸¡ã—ãŸã‚Šã™ã‚‹ã“ã¨ã¯ã§ãã¾ã›ã‚“。 def square(n) n * n end sq = square # squareメソッドを変数sqã«ä»£å…¥ã—ã¦ã¿ã‚‹ # ~> -:1:in `square': wrong number of arguments (0 for 1) (ArgumentError)
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最近ã€ã„ã‚ã„ã‚ãªè¨€èªžã§ç¶šã€…ã€å®Ÿè£…ã•ã‚Œã¦ã„ã関数型プãƒã‚°ãƒ©ãƒŸãƒ³ã‚°æŠ€æ³•ã€‚ 今回ã¯ã€Python2.7 ã«æ¨™æº–（ 一部ã€import ）ã«å‚™ã‚ã£ã¦ã„ã¦ã€Python 㧠ã„ã¾ã™ãã«ã§ã‚‚ãŠã“ãªãˆã‚‹ 関数型プãƒã‚°ãƒ©ãƒŸãƒ³ã‚°æŠ€æ³•ã®å®Ÿç¾æ‰‹æ³• ＆ 利用モジュール 㨠メソッドã«ã¤ã„ã¦ã€ï¼‘ヶ所ã«ã¾ã¨ã‚ã¦æ•´ç†ã—ã¦ã¿ãŸã€‚ （ 目次 ） map() ã§ é«˜éšŽé–¢æ•°ã‚’å®Ÿç¾ filter() ã§ é«˜éšŽé–¢æ•°ã‚’å®Ÿç¾ reduce() ã§ é«˜éšŽé–¢æ•°ã‚’å®Ÿç¾ ï¼† å†å¸°å‘¼ã³å‡ºã—関数 closure ã§ é«˜éšŽé–¢æ•°ã‚’å®Ÿç¾ functools.partial() ã§ã‚«ãƒªãƒ¼åŒ–（関数ã®éƒ¨åˆ†é©ç”¨ï¼‰ã‚’å®Ÿç¾ generator（ジェãƒãƒ¬ãƒ¼ã‚¿å¼ï¼‰ã§é…延評価を実装 yield（イールドå¼ï¼‰ã§é…å»¶è©•ä¾¡ã‚’å®Ÿç¾ ä»¥ä¸‹ã®ã‚³ãƒ¼ãƒ‰ã¯ã€ã“ã®è¨˜äº‹æœ«å°¾ã«è¨˜è¼‰ã—ãŸæ•°å¤šãã®å‚考ウェブサイトをå‚考ã€å¼•ç”¨ã—ã¦ã„ã¾ã™ map() ã¯ã€é–¢æ•°ã‚’引数ã«å—ã‘å–る「高階関数ã€ï¼ˆé–¢æ•°åž‹è¨€èªžï¼‰
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çµè«–ã‚’å…ˆã«ã¾ã¨ã‚ã‚‹ã¨ã€ä»¥ä¸‹ã®ï¼“ã¤ã§ã™ã€‚ 1. ã‚°ãƒãƒ¼ãƒãƒ«å¤‰æ•°ã®å®£è¨€ã‚’ãªã‚‹ã¹ã減らã—ãŸã„å ´åˆ 2. ユーザãŒå¼•æ•°ã‚’与ãˆã¦ã‚«ã‚¹ã‚¿ãƒžã‚¤ã‚ºå¯èƒ½ãªè‡ªç”±åº¦ã®é«˜ã„「関数ã€ã‚’生æˆã—ãŸã„å ´åˆ 3. å‰å›žã€å‘¼ã³å‡ºã•ã‚Œã¦å®Ÿè¡Œã•ã‚ŒãŸã¨ãã®æ¼”ç®—çµæžœï¼ˆå€¤ï¼‰ã‚’内部ã§ä¿å˜ã—ã¦ã€æ¬¡ã«å‘¼ã³å‡ºã•ã‚ŒãŸã¨ãã«ã€å‰å›žã®çµæžœï¼ˆå€¤ï¼‰ã«å¯¾ã—ã¦ã€ã•ã‚‰ã«åŒã˜å‡¦ç†ï¼ˆæ¼”算）を行ã†é–¢æ•°ã‚’生æˆã—ãŸã„å ´åˆ ä»¥ä¸‹ã€ã€Œã‚¯ãƒãƒ¼ã‚¸ãƒ£ã€ã®å®šç¾©ã‹ã‚‰ã€é ã®æ•´ç†ã¾ã§ã€åˆ†ã‹ã‚Šã‚„ã™ã„å‚考ウェブサイトã¸ã®ãƒªãƒ³ã‚¯ã‚’張りã¤ã¤ã€è¦‹ã¦ã„ãã¾ã™ã€‚ 〠定義 】クãƒãƒ¼ã‚¸ãƒ£ takeharuã•ã‚“ Qiita記事（2013/07/22）「JavaScriptã§ã‚¯ãƒãƒ¼ã‚¸ãƒ£å…¥é–€ã€ 「自分を囲むスコープã«ã‚る変数をå‚ç…§ã§ãる関数〠Wikipedia 「クãƒãƒ¼ã‚¸ãƒ£ã€ 引数以外ã®å¤‰æ•°ã‚’実行時ã®ç’°å¢ƒã§ã¯ãªãã€è‡ªèº«ãŒå®šç¾©ã•ã‚ŒãŸç’°å¢ƒï¼ˆé™çš„スコープ）ã«ãŠã„ã¦è§£æ±ºã™ã‚‹ã“ã¨ã‚’特徴ã¨ã™ã‚‹ã€‚関数ã¨ãれを評価ã™ã‚‹ç’°
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Pythonã§ãƒ—ãƒã‚°ãƒ©ãƒ を書ã„ã¦ã„ã‚‹ã¨ã€ã‚ˆã関数ã®ä¸ã§é–¢æ•°ã‚’作るã“ã¨ãŒã‚ã‚Šã¾ã™ã€‚ Python ã¯ã‚¯ãƒãƒ¼ã‚¸ãƒ£ã«å¯¾å¿œã—ã¦ã„ã¦ã€é–¢æ•°ã®ä¸ã§ä½œã‚‰ã‚ŒãŸé–¢æ•°ã¯ã€å¤–å´ã®é–¢æ•°ã®ãƒãƒ¼ã‚«ãƒ«å¤‰æ•°ã‚’å‚ç…§ã™ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚ クãƒãƒ¼ã‚¸ãƒ£ãŒä¸€ç•ªå½¹ã«ç«‹ã¤å ´é¢ãŒãƒ‡ã‚³ãƒ¬ãƒ¼ã‚¿ã§ã™ã€‚次ã®ä¾‹ã§ã¯ã€å¼•æ•°ã‚’å–るデコレータを作るãŸã‚ã«é–¢æ•°å†…関数を2段階作æˆã—ã€ãã‚Œãžã‚Œã®ãƒãƒ¼ã‚«ãƒ«å¤‰æ•°ã‚’一番内å´ã‹ã‚‰å‚ç…§ã—ã¦ã„ã¾ã™ï¼ˆã“ã®ãƒ—ãƒã‚°ãƒ©ãƒ ã¯ã€Python 2.6ã¨Python 3.0ã®ä¸¡æ–¹ã§å‹•ãã¾ã™â ）â 。 リスト1 # coding: utf-8 from __future__ import print_function import sys def log(out=sys.stderr): def decorator(func): name = func.__name__ def decorated(*args, **kwargs): ###
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Life is beautiful: Python Hack : å™›ã‚ã°å™›ã‚€ã»ã©ãŠã„ã—ããªã‚‹ã‚¯ãƒãƒ¼ã‚¸ãƒ£ã®è©±ã‚’見ã¦ã€ã„ã‚ã„ã‚ã¨æ°—ã«ãªã‚‹ã¨ã“ã‚ãŒã‚ã£ãŸã®ã§æ›¸ã„ã¦ã¿ã‚‹ã€‚ import yaml def _get_from_disk(): data = open('config.yaml').read().decode('utf8') config = yaml.load(data)　＃ クãƒãƒ¼ã‚¸ãƒ£å†…ã«éš 蔽・ä¿æŒã•ã‚Œã‚‹ãƒãƒ¼ã‚«ãƒ«å¤‰æ•° global get get = lambda : config # 二回目ã‹ã‚‰ã¯configã‚’è¿”ã™ç„¡å関数を呼ã¶æ§˜ã«å¤‰æ›´ return get() get = _get_from_disk # åˆå›žã®ã¿ãƒãƒ¼ãƒ€ãƒ¼ã‚’実行 http://satoshi.blogs.com/life/2009/11/python-hack.html é–“é•ãˆã¾ã—ãŸâ€¦ã€‚ã“ã®éƒ¨åˆ†ã¯ãã¡ã‚“ã¨å‹•ã„ã¦ã¾
Python Hack : å™›ã‚ã°å™›ã‚€ã»ã©ãŠã„ã—ããªã‚‹ã‚¯ãƒãƒ¼ã‚¸ãƒ£ã®è©±
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Closure Tools  | Google for Developers
Stay organized with collections Save and categorize content based on your preferences. The Closure Compiler compiles JavaScript into compact, high-performance code. The compiler removes dead code and rewrites and minimizes what's left so that it downloads and runs quickly. It also checks syntax, variable references, and types, and warns about common JavaScript pitfalls. These checks and optimizati
第1回　nonlocalã§ã‚¯ãƒãƒ¼ã‚¸ãƒ£ãŒä¾¿åˆ©ã« | gihyo.jp
Pythonã§ãƒ—ãƒã‚°ãƒ©ãƒ を書ã„ã¦ã„ã‚‹ã¨ã€ã‚ˆã関数ã®ä¸ã§é–¢æ•°ã‚’作るã“ã¨ãŒã‚ã‚Šã¾ã™ã€‚ Python ã¯ã‚¯ãƒãƒ¼ã‚¸ãƒ£ã«å¯¾å¿œã—ã¦ã„ã¦ã€é–¢æ•°ã®ä¸ã§ä½œã‚‰ã‚ŒãŸé–¢æ•°ã¯ã€å¤–å´ã®é–¢æ•°ã®ãƒãƒ¼ã‚«ãƒ«å¤‰æ•°ã‚’å‚ç…§ã™ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚ クãƒãƒ¼ã‚¸ãƒ£ãŒä¸€ç•ªå½¹ã«ç«‹ã¤å ´é¢ãŒãƒ‡ã‚³ãƒ¬ãƒ¼ã‚¿ã§ã™ã€‚次ã®ä¾‹ã§ã¯ã€å¼•æ•°ã‚’å–るデコレータを作るãŸã‚ã«é–¢æ•°å†…関数を2段階作æˆã—ã€ãã‚Œãžã‚Œã®ãƒãƒ¼ã‚«ãƒ«å¤‰æ•°ã‚’一番内å´ã‹ã‚‰å‚ç…§ã—ã¦ã„ã¾ã™ï¼ˆã“ã®ãƒ—ãƒã‚°ãƒ©ãƒ ã¯ã€Python 2.6ã¨Python 3.0ã®ä¸¡æ–¹ã§å‹•ãã¾ã™â ）â 。 リスト1 # coding: utf-8 from __future__ import print_function import sys def log(out=sys.stderr): def decorator(func): name = func.__name__ def decorated(*args, **kwargs): ###
JavaScript Closures for Dummies | Developing thoughts ― Morris Johns
Closures Are Not Magic This page explains closures so that a programmer can understand them - using working JavaScript code. It is not for gurus nor functional programmers. Closures are not hard to understand once the core concept is grokked. However, they are impossible to understand by reading any academic papers or academically oriented information about them! This article is intended for prog
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Python decorator
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Javascript Closures
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