document.querySelectorAllã§mapã‚„filterを使ã†æ–¹æ³• - Qiita
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Array#product を使ã£ã¦é…列ã®æ“作を楽ã«ã™ã‚‹ - ãŸãã£ã¦ã¤ã¥ã‚‹
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Rubyã§ã‚ªãƒ–ジェクトã®é…列を特定ã®å±žæ€§ã®é…列ã«å¤‰æ›ã™ã‚‹ - Qiita
class Person attr_accessor :name, :sex def initialize(name, sex) @name = name @sex = sex end end people = [Person.new("John", "M"), Person.new("Kid", "F")] p people # => [#<Person:0x007f8cf58aacd0 @name="John", @sex="M">, #<Person:0x007f8cf58aac58 @name="Kid", @sex="F">] p people.map { |person| person.name } # => ["John", "Kid"] p people.map { |person| person.sex } # => ["M", "F"] p people.select
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clipperhouse/gen インストール $ go get github.com/clipperhouse/gen コマンドラインツール「gen〠コマンドラインツール「genã€ãŒã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ã•ã‚Œã‚‹ $ gen Usage: gen [[*]package.TypeName] [-[*]all] [-exported] *package.TypeName # generate funcs for specified struct type; use leading * to specify pointer type (recommended) -all # generate all structs in current directory; use leading * to specify pointer type (recommended); shortcut -a or -*a
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PHPã®ã‚³ãƒ¬ã‚¯ã‚·ãƒ§ãƒ³å‡¦ç†ãƒ©ã‚¤ãƒ–ラリUnderbar.phpã®ç´¹ä»‹ ã“ã‚“ã«ã¡ã‚ã¡ã‚。 以å‰ã«ä¾¿åˆ©ãªVimã®Operatorをマスターã™ã‚‹ã‚’書ãã¾ã—ãŸemonkakã§ã™ã€‚ 今回ã¯ç§ãŒå€‹äººçš„ã«é–‹ç™ºã‚’進ã‚ã¦ã„ã¦ä»¥å‰ã«ç¤¾å†…勉強会ã§ç™ºè¡¨ã—ã¾ã—ãŸã€PHPã®ã‚³ãƒ¬ã‚¯ã‚·ãƒ§ãƒ³å‡¦ç†ãƒ©ã‚¤ãƒ–ラリã®Underbar.phpã®ç´¹ä»‹ã‚’ã—ãŸã„ã¨æ€ã„ã¾ã™ã€‚ PHPã®arrayãªã‚“ã¨ã‹é–¢æ•°ã¯ä½¿ã„å‹æ‰‹ãŒæ‚ªã„ PHPã«ã¯é…列処ç†ã®ãŸã‚ã®é–¢æ•°ãŒãŸãã•ã‚“ã‚ã‚Šã¾ã™ãŒã€array_map()ã®å¼•æ•°ã®é †ç•ªãŒå¤‰ã ã£ãŸã‚ŠarrayãŒãã‚‚ãもオブジェクトã§ã¯ãªã„ã®ã§ãƒ¡ã‚½ãƒƒãƒ‰ãƒã‚§ã‚¤ãƒ³ãŒã§ããªã‹ã£ãŸã‚Šä½¿ã„å‹æ‰‹ãŒè‰¯ãã‚ã‚Šã¾ã›ã‚“。 $xs = range(1, 10); $twice = function($n) { return $n * 2; }; array_slice(array_map($twice, $xs), 0, 3); // [2, 4,
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var a = [1,2,3,3,2,2,5]; // é‡è¤‡ã‚’削除ã—ãŸãƒªã‚¹ãƒˆ var b = a.filter(function (x, i, self) { return self.indexOf(x) === i; }); // é‡è¤‡ã®ã¿ã‚’リスト var c = a.filter(function (x, i, self) { return self.indexOf(x) !== self.lastIndexOf(x); }); // é‡è¤‡ã‚’検出ã—ãŸã‚‚ã®ã‚’é‡è¤‡ã—ãªã„ã§ãƒªã‚¹ãƒˆ var d = a.filter(function (x, i, self) { return self.indexOf(x) === i && i !== self.lastIndexOf(x); }); console.log(a); // [ 1, 2, 3, 3, 2, 2, 5 ] console.log
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setIntervalã§foreach - Qiita
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list method implementation with `inject`
Scala, Ruby, underscore.js ã§ã‚³ãƒ¬ã‚¯ã‚·ãƒ§ãƒ³ãƒ¡ã‚½ãƒƒãƒ‰ã®å¯¾å¿œè¡¨ - Qiita
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http://www.programming-magic.com/20071009233633/
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