Why you should switch from Ruby to Crystal - LogRocket Blog
Love Ruby? Try Crystal Do you love Ruby? Do you wish there was a better version of Ruby with blazing-fast performance like C? Well, your prayers have been answered. Let me introduce you to Crystal. The internet is calling it “Slick as Ruby, fast as Câ€. Since its inception, developers have loved the Ruby programming language for its simplicity, focus on developer satisfaction, and productivity. Rub
Compiler Internals（拙訳）| 電柱商事
Compiler Internals（拙訳） [原文] ※：ã“ã®è¨˜äº‹ã¯ï¼ŒCrystal Advent Calendar 2018 ã®22日目ã¨ã—ã¦ã€å½“åˆã¯ã¯ã¦ãªãƒ–ãƒã‚°ã¸æŠ•ç¨¿ã•ã‚ŒãŸã‚‚ã®ã§ã™ã€‚ Crystalã®å…¬å¼GitHubリãƒã‚¸ãƒˆãƒªã«ã¯ï¼Œ Compiler internals ã¨ã„ã†Crystalコンパイラã®æŒ™å‹•ã«ã¤ã„ã¦è§£èª¬ã•ã‚ŒãŸWikiページãŒå…¬é–‹ã•ã‚Œã¦ã„ã¾ã™ã€‚å…ƒã®è¨˜äº‹ãŒæ›¸ã‹ã‚ŒãŸã®ã¯4å¹´ã»ã©å‰ã«ãªã‚‹ãŸã‚，ç¾çŠ¶ã®å®Ÿè£…ã‹ã‚‰ãšã‚Œã¦ã—ã¾ã£ã¦ã„る部分も多ãã‚ã‚Šã¾ã™ãŒï¼Œcrystal コマンドã®å‹•ãã‚’ç†è§£ã™ã‚‹ç¬¬ä¸€æ©ã¨ã—ã¦ã¯éžå¸¸ã«å½¹ã«ç«‹ã¤æƒ…å ±ã ã¨æ€ã„ã¾ã—ãŸã®ã§ï¼Œå€‹äººçš„ãªç†è§£ã‚’ベースã«ã–ã£ãã‚Šã¨æ—¥æœ¬èªžåŒ–ã—ã¦ã¿ã¾ã—ãŸã€‚ 日本語ã¨ã—ã¦ã®æŽ¨æ•²ã‚‚ã‚ã¾ã‚Šã§ãã¦ãŠã‚‰ãšä¸è‡ªç„¶ãªè¡¨ç¾ã‚‚ã‚ã‚Šã¾ã™ãŒï¼Œå°‘ã—ã§ã‚‚ãŠå½¹ã«ç«‹ã¦ã°å¹¸ã„ã§ã™ã€‚ ãªãŠï¼Œã“れを書ã„ã¦ã‚‹äººé–“ã¯ç¿»è¨³ã®å°‚門家ã§ã¯ãªã„ãŸã‚，ä¸æ£ç¢ºãªãƒ‹ãƒ¥ã‚¢ãƒ³ã‚¹ãŒå«ã¾ã‚Œã¦ã„ã‚‹å¯èƒ½æ€§ãŒ
トップページ | Intducing Crystal Programming Language
æ¦‚è¦ ã€Ž Introducing Crystal Programming Language ã€ã¯ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°è¨€èªž Crystal ã®åˆå¿ƒè€…〜ä¸ç´šè€…å‘ã‘解説書ã§ã™ã€‚ Crystal ã®åŸºæœ¬çš„ãªæ–‡æ³•ã‹ã‚‰ Web アプリーケション・ CLI 開発ã®æ–¹æ³•ã¾ã§è§£èª¬ã—ãŸã“ã®ä¸€å†ŠãŒã‚ã‚Œã°ã€Crystal ã§ã®é–‹ç™ºã‚’今日ã‹ã‚‰åˆã‚ã‚‹ã“ã¨ãŒã§ãã‚‹ã§ã—ょã†ã€‚ 目次 ã¯ã˜ã‚ã« Getting Started 構文 マクムShards Web 開発 CLI 開発 é ’å¸ƒæƒ…å ± 2018å¹´10月4日（木）ã«é–‹å‚¬ã•ã‚Œã‚‹æŠ€è¡“書典5ã«ã¦ã€ã“ã®æœ¬ã‚’å°åˆ·ã—ãŸã‚‚ã®ã‚’é ’å¸ƒã—ã¾ã™ã€‚ãŠæ‰‹å…ƒã«ç½®ã„ã¦å†…容を確èªã—ãŸã„æ–¹ã¯ã€æ˜¯éžãŠæ‰‹ã«å–ã£ã¦ã‚‚らãˆã‚‹ã¨å¹¸ã„ã§ã™ã€‚ä¼šå ´ã§å¾…ã£ã¦ã„ã¾ã™ã€‚ サークルå crystal-jp スペース ã‹ 62 タイトル Introducing Crystal Programming Language é ’å¸ƒä¾¡æ ¼ 1,0
Porting Ruby to Crystal
So let’s say I have some CLI I want to exist … The concrete example I’m going to use is my previous blog post about Slop where I demonstrated how to use the slop gem. The code in that post is slightly contrived and certainly not clean but I think it demonstrates how to test CLI scripts which suffer from some testability problems (how do you capture STDOUT?). The thing that it does not demonstrate
#Crystal : initialize ä¸ã® self 利用（追記ã‚り） - Qiita
追記ã‚ã‚Š メモ 動的型付ã‘言語ã®Rubyã§ãã®æ©æµã‚’目一æ¯å—ã‘ã¦ã„ãŸã‚³ãƒ¼ãƒ‰ã‚’，Crystalãªã©é™çš„型付ã‘言語ã¸ç§»æ¤ã—よã†ã¨ã™ã‚‹ã¨ï¼Œæ€ã‚ã¬å°çŸ³ã«èº“ãã“ã¨ãŒå¤šã„。 今日ã®å°çŸ³ã¯ inialize ä¸ã® self 。 親å関係ã®ã‚るオブジェクト間ã§ç›¸äº’å‚ç…§ã—ãŸã„よã†ãªã¨ã，基本的ã«ã€Œå®Ÿéš›ã«ä½¿ç”¨ã•ã‚Œã‚‹çž¬é–“ã®çŠ¶æ…‹ãŒã™ã¹ã¦ã€ãª Ruby ã 㨠class Parent attr_reader :name attr_reader :child def initialize(_name) @name = _name @child = Child.new(self) end end class Child attr_reader :parent def initialize(_parent) @parent = _parent end end the_parent = Parent.new("John")
æ–°ã—ã„プãƒã‚°ãƒ©ãƒŸãƒ³ã‚°è¨€èªžã‚’å¦ã¶ãŸã‚ã«ã€isuconã®WebAppを実装ã—ãŸã‚‰ã„ã‚ã„ã‚ã¨å‹‰å¼·ã«ãªã£ãŸ - 圧倒äºã‚°ãƒ©ãƒ³ãƒ‘ã®ãƒ–ãƒã‚°
ã„ã‚ã„ã‚ã¨å¾—ã‚‹ã‚‚ã®ãŒå¤šã‹ã£ãŸã®ã§ã€ã‚„ã£ãŸã“ã¨ã¨æ„Ÿæƒ³ã‚’ã¾ã¨ã‚ã¾ã™ã€‚ é•·ããªã£ã¦ã—ã¾ã£ãŸã®ã§ã€ãŠæ™‚é–“ã‚る時ã«ã©ã†ãžã€‚ TL;DR Crystal言語（ja） ã§ã€isucon5-qualifier-standaloneã®WebAppを実装 æ–°ã—ã„言語ã®å‹‰å¼·ã‚’ã™ã‚‹éš›ã€isuconã‚’é¡Œæã«ã™ã‚‹ã¨è‰¯ã•ãㆠ実装ã™ã‚‹ã‚‚ã®ãŒæ±ºã¾ã£ã¦ã„ã‚‹ã®ã§ä½™è¨ˆãªã“ã¨ã¯è€ƒãˆãšã‚³ãƒ¼ãƒ‡ã‚£ãƒ³ã‚°ã«é›†ä¸ã§ãã‚‹ å‚考ã«ã§ãる他言語ã®å®Ÿè£…ãŒã™ããã°ã«ã‚ã‚‹ ライブラリã®ã‚³ãƒ¼ãƒ‰ã‚’èªã‚€ã“ã¨ã«æŠµæŠ—ãŒãªããªã£ãŸ ライブラリã®ãƒªãƒã‚¸ãƒˆãƒªã«PRã‚’é€ã‚ŠãŸããªã£ãŸ リãƒã‚¸ãƒˆãƒª Crystal言語 ã§ã€isucon5-qualifier-standaloneã®WebAppを実装ã—ã¾ã—ãŸã€‚ github.com 目次 TL;DR リãƒã‚¸ãƒˆãƒª 目次 発端 実際ã«ã‚„ã£ãŸã“ã¨ã®ãƒ”ックアップ DBライブラリã‹ã‚‰ã®è¿”り値ãŒå£®å¤§ãªUnionåž‹ã«ãªã£ã¦ã„ã¦ã¤ã‚‰ã„ マルãƒ
Subvisual | Deploying a Crystal application to Heroku
Crystal is a typed, LLVM compiled language that reads (mostly) as Ruby. It's a modern language that comes bundled with support for WebSockets, OAuth and other niceties. Even at its early stage, there are already more than a couple web frameworks gaining popularity in the community. We're going to use Amethyst, which is currently the most popular one (as far as GitHub stars go). Getting the depende
Make a Lisp 㧠Lisp 処ç†ç³»ã‚’å¦ã‚“ã§ã¤ãã‚‹ (with Crystal) - ã¯ã‚„ãプãƒã‚°ãƒ©ãƒ ã«ãªã‚ŠãŸã„
インタプリタå¼ã®è¨€èªžå‡¦ç†ç³»ã‚’書ã„ãŸã“ã¨ãŒç„¡ã‹ã£ãŸã®ã§ä¸€åº¦å®Ÿè£…ã—ã¦ã¿ã‚ˆã†ã¨æ€ã£ã¦ï¼Œã“ã®æ‰‹ã®ã¯ Lisp ãŒå®šç•ªã ã¨ã„ã†ã“ã¨ã§ï¼Œå‰ã€…ã‹ã‚‰æ°—ã«ãªã£ã¦ã„㟠Make a Lisp (mal) ã«æŒ‘戦ã—ã¦ã¿ã¾ã—ãŸï¼Ž Make a Lisp (mal) ã¨ã¯ Make a Lisp ã¯è‰²ã€…ãªè¨€èªžã§ mal ã¨ã„ㆠLisp 方言を実装ã—ã¦ã¿ã‚ˆã†ã¨ã„ã†ãƒ—ãƒã‚¸ã‚§ã‚¯ãƒˆã§ã™ï¼Ž 30以上ã®è¨€èªžã§ã® mal 処ç†ç³»å®Ÿè£… 11段階ã®ã‚¹ãƒ†ãƒƒãƒ—ã«åˆ†ã‘られãŸå®Ÿè£…ガイド（全体ã®æ§‹æˆå›³ä»˜ã） å„実装ステップã”ã¨ã®ãƒ†ã‚¹ãƒˆã‚±ãƒ¼ã‚¹ ã¨ã„ã£ãŸã»ã—ã„æƒ…å ±ãŒæƒã£ã¦ãŠã‚Šï¼Œè¨€èªžå‡¦ç†ç³»åˆå¿ƒè€…ã§ã‚‚ Lisp 実装ã«ã¤ã„ã¦ç°¡å˜ã«å¦ã¹ã‚‹ç’°å¢ƒãŒæ•´ã£ã¦ã„ã¾ã™ï¼Ž 11段階ã®å„ステップã¯ä»¥ä¸‹ã®æ§˜ãªæ„Ÿã˜ã§ã™ï¼Ž The REPL : 実装を始ã‚る準備（自分ã®è¨€èªžã‚’ Makefile ã«ç™»éŒ²ã—㦠make 一発ã§ãƒ†ã‚¹ãƒˆã‚’走らã›ã‚‰ã‚Œã‚‹ã‚ˆã†ã«ã™ã‚‹ï¼Œé–¢æ•°ã®ã‚¹ã‚±ãƒ«ãƒˆãƒ³ã®
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Weekly Crystal-JP
Porting to Windows · crystal-lang/crystal Wiki - ãŠã‚“ãŒãˆã—ã®èªã‚€ãƒ–ãƒã‚°
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