[B! haskell] udzuraã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

udzura id:udzura

haskellã«é–¢ã™ã‚‹udzuraã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (72)

${{author_name}}$

{{{comment_expanded}}}

{{label}}

{{#is_bookmark}}ãƒªã‚¹ãƒˆ{{/is_bookmark}}{{^is_bookmark}}ãƒªãƒ³ã‚¯{{/is_bookmark}}

${{author_name}}$
{{author_name}}{{created}}
{{ #comment }}{{ comment }}{{ /comment }}
- {{ label }}

${{author_name}}$

{{{comment_expanded}}}

{{label}}

{{#is_bookmark}}ãƒªã‚¹ãƒˆ{{/is_bookmark}}{{^is_bookmark}}ãƒªãƒ³ã‚¯{{/is_bookmark}}

GMO -> (Age, IIJ) :: Igreque -> Info
GMO -> (Age, IIJ) by Yuji Yamamoto on April 16, 2018 ã”å ±å‘ŠãŒé…ããªã‚Šã¾ã—ãŸãŒã€å®Ÿã¯ä»Šå¹´2æœˆæœ«ã‚’ã‚‚ã¡ã¾ã—ã¦GMOãƒ•ã‚£ãƒŠãƒ³ã‚·ãƒ£ãƒ«ãƒ›ãƒ¼ãƒ«ãƒ‡ã‚£ãƒ³ã‚°ã‚¹æ ªå¼ä¼šç¤¾ã‚’é€€è·ã—ã€3æœˆã‚ˆã‚Šæ ªå¼ä¼šç¤¾ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆã‚¤ãƒ‹ã‚·ã‚¢ãƒ†ã‚£ãƒ–ã«è»¢è·ã—ã¦ãŠã‚Šã¾ã—ãŸã€‚ ï¼ˆä¸€éƒ¨çŸ¥äººã«ã¯éš ã™ã‚ˆã†ãªã“ã¨ã‚’ã—ã¦ã„ã¦ã”ã‚ã‚“ãªã•ã„ï¼ï¼‰ ãƒ—ãƒªã‚ãƒ¥ã‚¢ã§è¨€ãˆã°2016å¹´ã®ã€Œé”æ³•ã¤ã‹ã„ãƒ—ãƒªã‚ãƒ¥ã‚¢ï¼ã€ãŒã¡ã‚‡ã†ã©å§‹ã¾ã£ã¦ã‹ã‚‰ã€Œã‚ãƒ©ã‚ãƒ©â˜†ãƒ—ãƒªã‚ãƒ¥ã‚¢ã‚¢ãƒ©ãƒ¢ãƒ¼ãƒ‰ã€ãŒçµ‚ã‚ã‚‹ã¾ã§ã®2å¹´é–“ã¨ã€ã€ŒHUGã£ã¨ï¼ãƒ—ãƒªã‚ãƒ¥ã‚¢ã€ãŒå§‹ã¾ã£ã¦ã‹ã‚‰ã®1ãƒ¶æœˆåˆ†å‹™ã‚ãŸã“ã¨ã«ãªã‚Šã¾ã™ ï¼ˆä»Šå›žã¯ã¡ã‚‡ã†ã©ãƒ—ãƒªã‚ãƒ¥ã‚¢ã®ç§»ã‚Šå¤‰ã‚ã‚Šæ™‚æœŸã«è»¢è·ã™ã‚‹ã“ã¨ã¯ã§ãã¾ã›ã‚“ã§ã—ãŸï¼‰ã€‚ IIJã«å…¥ç¤¾ã—ã¦ã‹ã‚‰ã¯3æœˆã«ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯é–‹ç™ºæœ¬éƒ¨ã«é…å±žã•ã‚ŒãŸå¾Œã€ç¾åœ¨ã¯IIJ Innovation Institute (IIJ II)ã«å‡ºå‘ã—ã¦ãŠã‚Šã¾ã™ã€‚ çµŒç·¯ã¨ã‹ ãã£ã‹ã‘
udzura 2018/04/16
java

haskell
ãƒªãƒ³ã‚¯
GitHub - NicolasT/kontiki: An implementation of the Raft consensus protocol
You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window. Reload to refresh your session. You switched accounts on another tab or window. Reload to refresh your session. Dismiss alert
udzura 2017/07/14
haskell

raft
ãƒªãƒ³ã‚¯
Functorã‚’ç†è§£ã™ã‚‹ - ãŠå¸ƒå›£å®‡å®™ãã“
ã“ã®è¨˜äº‹ã§ã¯Functorã¨ã„ã†Haskellã«ã¯æ¬ ã‹ã›ãªã„åž‹ã‚¯ãƒ©ã‚¹ã«ã¤ã„ã¦ã€æ¦‚å¿µã‚„æ‰ãˆæ–¹ã€ã©ã†ã„ã£ãŸåž‹ãŒFunctorã¨ã„ã†æŒ¯ã‚‹èˆžã„ã‚’ã§ãã‚‹ã®ã‹ã‚’è§£èª¬ã—ã¾ã™ã€‚ åž‹ã‚¯ãƒ©ã‚¹ã¨ã¯ åž‹ã‚¯ãƒ©ã‚¹ã¨ã¯ã€å€¤ã®ç‰å€¤æ€§ã‚’åˆ¤å®šã—ãŸã‚Šã€ã‚ã‚‹å€¤ã‚’æ–‡å—åˆ—ã¨ã—ã¦è¡¨ç¾ã—ãŸã‚Šã¨ç‰¹å®šã®æŒ¯ã‚‹èˆžã„ã‚’å®šç¾©ã™ã‚‹ã‚¤ãƒ³ã‚¿ãƒ¼ãƒ•ã‚§ã‚¤ã‚¹ã§ã™ã€‚ãã®ç‰¹å®šã®æŒ¯ã‚‹èˆžã„ã‚’å®šç¾©ã—ãŸé–¢æ•°ã®ã“ã¨ã‚’ãƒ¡ã‚½ãƒƒãƒ‰ã€ãã®ãƒ¡ã‚½ãƒƒãƒ‰ã‚’å®Ÿè£…ã—ãŸåž‹ã‚’ãã®åž‹ã‚¯ãƒ©ã‚¹ã®ã‚¤ãƒ³ã‚¹ã‚¿ãƒ³ã‚¹ã¨å‘¼ã³ã¾ã™ã€‚ çŠ¶æ…‹ã¨ã„ã†ç®± å€¤ã‚’é–¢æ•°ã«é©ç”¨ã—ãŸã„ã¨ãã¯æ¬¡ã®ã‚ˆã†ã«æ›¸ã‘ã¾ã™ã€‚ > (+100) 5 105 Haskellã§ã¯ã‚ã‚‹çŠ¶æ…‹ã«å€¤ãŒå…¥ã£ã¦ã„ã‚‹ã“ã¨ãŒã‚ˆãã‚ã‚Šã¾ã™ã€‚ä¾‹ãˆã°Maybeåž‹ã¯å€¤ãŒJust 5ã«å…¥ã£ã¦ã„ãŸã‚Šã™ã‚‹ã‚ˆã†ã«ã€‚ã“ã®ã‚ã‚‹çŠ¶æ…‹ã¯å€¤ã‚’å…¥ã‚Œã‚‹ã€Œç®±ã€ã¨è€ƒãˆã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚ ã“ã“ã§Maybeåž‹ã«å…¥ã£ãŸå€¤ã‚’é–¢æ•°ã«é©ç”¨ã—ãŸã„ã¨ã—ã¾ã™ã€‚ã—ã‹ã—ã€æ¬¡ã®ã‚ˆã†ã«æ›¸ã„ã¦ã‚‚ã†ã¾ãã„ãã¾ã›ã‚“ã€‚ > (+100)
udzura 2017/06/12
ä¾¿åˆ©

functor

haskell
ãƒªãƒ³ã‚¯
ShellCheck â€“ shell script analysis tool
GPLv3: free as in freedom documented on the ShellCheck Wiki available on GitHub (as is this website) already packaged for your distro or packageÂ manager supported as an integrated linter in majorÂ editors available in CodeClimate, Codacy and CodeFactor to auto-check your GitHub repo written in Haskell, if you're into that sortÂ ofÂ thing.
udzura 2017/01/15
è‰¯ã„

bash

haskell
ãƒªãƒ³ã‚¯
All About Monads ãƒ¢ãƒŠãƒ‰ã®ã™ã¹ã¦
ãƒ¢ãƒŠãƒ‰ã®ã™ã¹ã¦ Haskell ã«ãŠã‘ã‚‹ãƒ¢ãƒŠãƒ‰ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ã®ç†è«–ã¨å®Ÿè·µã«é–¢ã™ã‚‹åŒ…æ‹¬çš„ã‚¬ã‚¤ãƒ‰ Version 1.1.0 ã“ã®ãƒãƒ¥ãƒ¼ãƒˆãƒªã‚¢ãƒ«ã¯ã€ãƒ¢ãƒŠãƒ‰ã®æ¦‚å¿µã¨ãã®é–¢æ•°ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ã«ãŠã‘ã‚‹å¿œç”¨ã« ã¤ã„ã¦ã€åˆä¸ç´šã® Haskell ãƒ—ãƒã‚°ãƒ©ãƒžã«ã‚ã‹ã‚Šã‚„ã™ãã€åˆ©ç”¨ä¾¡å€¤ãŒã‚ã‚‹ã‚ˆã†ãª è§£èª¬ã‚’ã™ã‚‹ã“ã¨ã‚’æ—¨ã¨ã—ã¦ã„ã¾ã™ã€‚èªè€…ã¯ Haskell ã«ãªã‚Œã¦ã„ã‚‹ã“ã¨ã‚’å‰æã¨ ã—ã¾ã™ãŒã€ãƒ¢ãƒŠãƒ‰ã«é–¢ã™ã‚‹çµŒé¨“ã¯è¦æ±‚ã—ã¦ã„ã¾ã›ã‚“ã€‚ã“ã®ãƒãƒ¥ãƒ¼ãƒˆãƒªã‚¢ãƒ«ã¯ã€å¤š ãã®é¡Œæã‚’ã‚«ãƒãƒ¼ã—ã¦ã„ã¾ã™ã€‚å¾ŒåŠã®ã‚»ã‚¯ã‚·ãƒ§ãƒ³ã§ã¯ã€å‰åŠã®é¡Œæã‚’ã‚ˆãç†è§£ã— ã¦ã„ã‚‹ã“ã¨ã‚’å‰æã¨ã—ã¾ã™ã€‚é †ã‚’ãŠã£ã¦ã€ãƒ¢ãƒŠãƒ‰ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ã‚’ä¾‹ç¤ºã™ã‚‹ãŸã‚ ã®ã‚µãƒ³ãƒ—ãƒ«ã‚³ãƒ¼ãƒ‰ãŒãŸãã•ã‚“ç”¨æ„ã•ã‚Œã¦ã„ã¾ã™ã€‚ä¸€èªã§ã€ã™ã¹ã¦ã®é¡Œæã‚’å¸åŽã— ã‚ˆã†ã¨ã„ã†ã®ã¯ãŠå‹§ã‚ã§ãã¾ã›ã‚“ã€‚ ã“ã®ãƒãƒ¥ãƒ¼ãƒˆãƒªã‚¢ãƒ«ã¯ 3 ã¤ã®éƒ¨åˆ†ã§æ§‹æˆã•ã‚Œã¦ã„ã¾ã™ã€‚æœ€åˆã®éƒ¨åˆ†ã¯ã€ é–¢æ•°ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ã«ãŠã‘ã‚‹ãƒ¢ãƒŠãƒ‰ã®åŸºæœ¬çš„
udzura 2015/08/24
ã™ã¹ã¦ã

haskell

functional

monad
ãƒªãƒ³ã‚¯
ãƒ¢ãƒŠãƒ‰ã£ã¦çµå±€ä½•ãªã®ã‚ˆ? â€” join to Monad v0.1.3 documentation
ãƒ¢ãƒŠãƒ‰ã£ã¦çµå±€ä½•ãªã®ã‚ˆ?Â¶ Haskell ã‚’å‹‰å¼·ã—ã‚ˆã†ã¨ã™ã‚‹ã¨å¿…ãšã€Œãƒ¢ãƒŠãƒ‰ã€ã£ã¦ã®ãŒå‡ºã¦ãã¾ã™ã€‚å›°ã£ãŸã‚‚ã®ã§ã™ã€‚æ•°å¦ã¨ã‹åœè«–ã¨ã‹é–¢ä¿‚ãŒã‚ã‚‹ã‚‰ã—ãã£ã¦ã€ä½•ãŒæ›¸ã„ã¦ã‚ã‚‹ã‚“ã ã‹åˆ†ã‹ã‚‰ãªãã£ã¦å«Œã«ãªã£ã¦ã—ã¾ã„ã¾ã™ã€‚ã§ã‚‚ãã€Haskell ã£ã¦å‡„ã„ã‚‰ã—ã„ã˜ã‚ƒãªã„ã§ã™ã‹ã€æ ¼å¥½è‰¯ã„ã‚‰ã—ã„ã˜ã‚ƒãªã„ã§ã™ã‹ã€‚ã“ã“ã¯ã¡ã‚‡ã£ã¨ãŒã‚“ã°ã£ã¦è‰²ã€…è€ƒãˆã¦ã¿ã¾ã—ã‚‡ã†ã€‚ ãã‚‚ãã‚‚ Haskell ã£ã¦ä½•ãªã®ã‚ˆ?Â¶ ä½•ãªã‚“ã§ã—ã‚‡ã†ãã€Haskell ã£ã¦ã€‚ã‚³ãƒ³ãƒ”ãƒ¥ãƒ¼ã‚¿è¨€èªžã‚‰ã—ã„ã‚“ã§ã™ã€ã‚ã€ãã‚Œã¯åˆ†ã‹ã£ã¦ã‚‹ã¨ã€‚è‰¯ãæŒ™ã’ã‚‰ã‚Œã‚‹æ€§è³ªã¯æ¬¡ãªæ„Ÿã˜?: é–¢æ•°åž‹è¨€èªž å¼·ã„åž‹ä»˜ã‘ é…å»¶è©•ä¾¡ å‚ç…§é€éŽ ã“ã“ã§ã¡ã‚‡ã£ã¨åž‹ã«é–¢ã—ã¦è¦‹ã¦ã¿ã¾ã—ã‚‡ã†ã€‚è©¦ã—ã« Haskell ã®å®Ÿè£…ã® 1 ã¤ã§ã‚ã‚‹ Hugs ã§ 1 ã«ã¤ã„ã¦è€ƒãˆã¦ã¿ã¾ã™ã€‚Hugs ã§ã¯ :type ã‚„ :info ã¨ã„ã†ã‚³ãƒžãƒ³ãƒ‰ã§ hugs ã«åž‹ã®æƒ…å ±ãªã©ã‚’è³ªå•ã™ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚ä¾‹ãˆ
udzura 2015/08/15
ãƒªãƒãƒ“ãƒªã«èªã‚‚ã†â€¦â€¦

haskell

types
ãƒªãƒ³ã‚¯
ã‚·ãƒ³ãƒ—ãƒ«ã§ã‹ã¤æœ€é«˜ã®JavaScriptãƒ—ãƒãƒ•ã‚¡ã‚¤ãƒ© sjsp ã‚’ä½œã‚Šã¾ã—ãŸï¼ â€• Webã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ãŒè¤‡é›‘åŒ–ã™ã‚‹ä¸ã§ãƒ—ãƒãƒ•ã‚¡ã‚¤ãƒ©ã«æ±‚ã‚ã‚‰ã‚Œã‚‹ã‚‚ã®ã¨ã¯ä½•ã‹ - ãƒ—ãƒã‚°ãƒ©ãƒ ãƒ¢ã‚°ãƒ¢ã‚°
ã‚ã‚‰ã™ã˜ WebæŠ€è¡“ãŒè¤‡é›‘ã«ãªã‚‹ä¸ã§ã€JavaScriptã®ãƒ—ãƒãƒ•ã‚¡ã‚¤ãƒªãƒ³ã‚°ã‚’ã¨ã‚‹æ–¹æ³•ã¨ã¯ã€‚ ãƒ—ãƒãƒ•ã‚¡ã‚¤ãƒªãƒ³ã‚°ã‚’å–ã‚‹ãŸã‚ã®ã‚³ãƒ¼ãƒ‰ã‚’æ‰‹ã§æ›¸ã„ã¦ã¿ã¾ã—ã‚‡ã†ã€‚ ã¨ã¦ã‚‚ã‚·ãƒ³ãƒ—ãƒ«ã§ã€ã‹ã¤æœ€é«˜ã®JavaScriptãƒ—ãƒãƒ•ã‚¡ã‚¤ãƒ© sjsp ã‚’ä½œã‚Šã¾ã—ãŸã€‚ æœ¬å½“ã«ã‚ã£ãŸæ€–ã„è©± ä¸Šå¸ ã€Œã¨ã«ã‹ãJavaScriptã®ã‚³ãƒ¼ãƒ‰ã‚’é€Ÿãã—ã¦ãã‚Œã€ ç§ ã€Œåˆ†ã‹ã‚Šã¾ã—ãŸã€é€Ÿãã—ã¾ã™ã€ (æ¬¡ã®æ—¥) ç§ ã€Œã„ã„ãƒ—ãƒãƒ•ã‚¡ã‚¤ãƒ©ãŒãªã„ãªã‚‰ä½œã‚Œã°ã„ã„ã˜ã‚ƒãªã„ã€ åŒã˜ãƒãƒ¼ãƒ ã®äºº ã€Œãˆã£ï¼Ÿã€ ç§ ã€Œæœ€é«˜ã®JavaScriptãƒ—ãƒãƒ•ã‚¡ã‚¤ãƒ©ä½œã£ãŸã‚ˆã€ åŒã˜ãƒãƒ¼ãƒ ã®äºº ã€Œã€Œãˆã£ãˆã£ï¼Ÿï¼Ÿï¼Ÿã€ã€ ç§ ã€Œæ—©é€Ÿä½¿ã£ã¦ã¿ãŸã‚‰ã“ã“ã¨ã“ã“ãŒé…ã„ã£ã¦åˆ†ã‹ã£ãŸã‚ˆã€ åŒã˜ãƒãƒ¼ãƒ ã®äºº ã€Œã€Œã€Œã“ã®åã¯ä¸€ä½“â€¦ã€ã€ã€ JavaScriptã®ãƒ—ãƒãƒ•ã‚¡ã‚¤ãƒªãƒ³ã‚°ã®é›£ã—ã• è¿‘å¹´ã€Webãƒ–ãƒ©ã‚¦ã‚¶ãƒ¼ã®å‡¦ç†é€Ÿåº¦ã¯è‘—ã—ãå‘ä¸Šã—ã€ãã®å¯ç”¨æ€§ã®é«˜ã•ã‹ã‚‰ã€ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã®ãƒ—ãƒ©ãƒƒãƒˆãƒ•ã‚©ãƒ¼ãƒ
udzura 2015/07/01
Haskellã¨ã„ã†è¨€èªžä¾¿åˆ©ãã†

javascript

haskell
ãƒªãƒ³ã‚¯
Haskellã®å‹‰å¼·ã‚’ã—ã¦ã„ãŸã‚‰ã€Elixirã®ãƒ‘ã‚¤ãƒ—ãƒ©ã‚¤ãƒ³æ¼”ç®—åãŒF#ç”±æ¥ã§ã‚ã‚‹ã“ã¨ã‚’çŸ¥ã£ãŸ - ï¼Šã€Œãµã£ã‹ã¤ã®ã˜ã‚…ã‚‚ã‚“ãŒã¡ãŒã„ã¾ã™ã€‚ã€withã¬ã“
Elixirã¨ã„ã†ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°è¨€èªžã«ã€ãƒ‘ã‚¤ãƒ—ãƒ©ã‚¤ãƒ³ãƒžã‚¯ãƒæ¼”ç®—åã¨ã„ã†ã®ãŒã‚ã‚Šã€é¢ç™½ã„ãªãƒ¼ã¨æ€ã£ã¦ã„ãŸã€‚ãŠå‰ã‚‰Elixirã¨ã‹çŸ¥ã‚‰ãªã„ã ã‚ã†ã‹ã‚‰ã€ã“ã‚ŒãŒã©ã‚“ãªã‚‚ã®ã‹å¾Œã§æ›¸ãã¨ã—ã¦ã€Haskellã®å‹‰å¼·ã‚’ã—ã¦ã„ãŸã‚‰åŒç‰ã®ã‚‚ã®ã‚’å®Ÿè£…ã—ã¦ã„ã‚‹è¨˜äº‹ã‚’ã¿ã¤ã‘ã€ã©ã†ã‚‚ã“ã‚Œã¯F#ç”±æ¥ã§ã‚ã‚‹ã“ã¨ã‚’çŸ¥ã£ãŸã€‚ ã•ã¦ã€ãã ã‚‰ãªã„ä¾‹ã ã‘ã©ã€æ•°ã®ãƒªã‚¹ãƒˆã«ä½•ã‹(map)ã—ã¦æ¡ä»¶ã‚’æº€ãŸã™ã‚‚ã®ã‚’æŠœãå‡ºã—ã¦(filter)ã€æœ€å¾Œã«è¶³ã™(fold)ã¿ãŸã„ãªã“ã¨ã£ã¦ã€Haskellã§ã¯æ™®é€šãŸã¨ãˆã°æ¬¡ã®ã‚ˆã†ã«æ›¸ãï¼ˆã¨æ€ã†ï¼‰ Prelude> sum . filter even . map (+1) $ [1..10] 30 Haskellãªã‚“ã¦çŸ¥ã‚‰ãªã„äººã‚‚ã„ã‚‹ã¨æ€ã†ã®ã§ã€ã»ã¼åŒç‰ã®ã‚³ãƒ¼ãƒ‰ã‚’Perlã§æ›¸ãã¨ã“ã†ãªã‚‹ use strict; use warnings; use List::Util qw/sum/; my $ans
udzura 2015/05/14
ä¾¿åˆ©

haskell

elixir
ãƒªãƒ³ã‚¯
Re: Haskellã®å‹‰å¼·ã§è©°ã¾ã£ã¦ã‚‹éƒ¨åˆ† - maoeã®ãƒ–ãƒã‚°
mizchi.hatena blog.com Haskellã‚’ç¿’å¾—ã™ã‚‹ä¸Šã§é›£ã—ã„ãƒã‚¤ãƒ³ãƒˆã ã¨æ€ã„ã¾ã™ã€‚å¤§ããåˆ†ã‘ã‚‹ã¨æ¬¡ã®äºŒã¤ã«ã¾ã¨ã‚ã‚‰ã‚Œã‚‹ã®ã§ã¯ãªã„ã‹ã¨æ€ã„ã¾ã™ã€‚ ã‚³ãƒ¼ãƒ‰ã®ä¸ã§ç¾ã‚Œã‚‹è˜åˆ¥åã‹ã‚‰ãã‚ŒãŒä½•ãªã®ã‹ã‚’æŽ¢ã—ã¥ã‚‰ã„ CabalãŒã¤ã‚‰ã„ ãã‚Œãžã‚Œå€‹äººçš„ãªè¦‹è§£ã‚’æ›¸ã„ã¦ã¿ã¾ã™ã€‚ ã‚³ãƒ¼ãƒ‰ä¸ã®è˜åˆ¥åã®æŽ¢ã—æ–¹ ãƒ¢ãƒŠãƒ‰ã®ã¨ã“ã‚ã® <$> ã¨ã‹ <*> ã¨ã‹ã€ãˆã€œã©ã£ã¡ãŒApplicativeã§ä½•ãŒFunctorã ã£ã‘ã€ãã‚‚ãã‚‚ãã®å®šç¾©ã¯ãªã‚“ã ã£ãŸã£ã‘ã€‚ãˆã€œã‚ã€œã€œã€œã¿ãŸã„ã«ãªã‚‹ã€‚ ã¨åå‰ç©ºé–“ã® ãã—ã¦åå‰ã§å½¹å‰²ã‚’æŽ¨æ¸¬ã™ã‚‹ã“ã¨ãŒå›°é›£ãªäº‹ãŒå¤šã€…ã‚ã‚‹ã€‚mapM_ ã¨ã‹ã€å‰è¿°ã—ãŸæ¼”ç®—åã¨ã‹ã€‚ã„ã‚„ mapM_ ã¯ map ãŒã‚ã£ã¦ mapM ãŒã‚ã£ã¦ã€ã£ã¦ã„ã†æ®µéšŽãŒã‚ã‚‹ã®ã¯ç†è§£ã—ã¦ã„ã‚‹ã‘ã©ã€ã‚½ãƒ¼ã‚¹èªã‚“ã§ã¦çªç„¶å‡ºç¾ã™ã‚‹ãã‚Œã«ã¯å…¨ãå¯¾å¿œã§ããªã„ã€‚ ã¯ã©ã¡ã‚‰ã‚‚è˜åˆ¥åã‹ã‚‰åž‹ãŒã‚ã‹ã‚Œã°å¤§éƒ¨åˆ†ãŒè§£æ±ºã—ã¾ã™ã€‚ã‚ã‚ŠãŒãŸã„ã“ã¨ã«è¿‘
udzura 2015/04/13
ã‚„ã¯ã‚Šåž‹ãŒã‚ã‹ã‚Œã°å¤§éƒ¨åˆ†ãŒè§£æ±ºãªã®ã ãªã‚ã€œã¨

haskell
ãƒªãƒ³ã‚¯
needle: ASCII-fied arrow notation Â· Scrambled Eggs
Haskell programmers have access to so-called arrow notation for programming with arrows (i.e. generalised functions). It looks something like this: {-# LANGUAGE Arrows #-} f :: (Int, Int, Int) -> (Int, Int, Int, Int) f = proc (a,b,c) -> do d <- (+1) -< a e <- uncurry div -< (d,c) f <- negate -< e g <- (*2) -< b returnA -< (d,e,f,g) To me this is not very satisfying. It doesnâ€™t seem to convey the a
udzura 2014/09/29
crazy

haskell
ãƒªãƒ³ã‚¯
bwinÂ·å¿…èµ¢(ä¸å›½)å”¯ä¸€å®˜æ–¹ç½‘ç«™
udzura 2014/06/03
config

haskell

types
ãƒªãƒ³ã‚¯
Haskellä½¿ã„ã®é«˜é »åº¦å–å¼•ã®ä¼šç¤¾ã«ãŠé‚ªé”ã—ãŸ
å…ˆæ—¥ã€æ—¥çµŒã‚³ãƒ³ãƒ”ãƒ¥ãƒ¼ã‚¿ç‰¹é›†è¨˜äº‹ã®å–æã§æ±äº¬éƒ½å†…ã®æŸæ‰€ã«ã‚ã‚‹ã€ŒTsuru Capitalã€ã¨ã„ã†ã€é«˜é »åº¦å–å¼•ï¼ˆHFTã€High-Frequency Tradingï¼‰ã‚’æ‰‹æŽ›ã‘ã‚‹ä¼æ¥ã®ã‚ªãƒ•ã‚£ã‚¹ã«ãŠé‚ªé”ã—ãŸã€‚ HFTã¨ã„ã†ã®ã¯ã€ãƒ—ãƒã‚°ãƒ©ãƒ ã«ã‚ˆã£ã¦æ ªå¼ãªã©ã®é‡‘èžå•†å“ã‚’æ•°msï¼ˆãƒŸãƒªç§’ï¼‰ã‹ã‚‰æ•°Î¼sï¼ˆãƒžã‚¤ã‚¯ãƒç§’ï¼‰ã§é«˜é€Ÿã«è‡ªå‹•å–å¼•ã™ã‚‹ã“ã¨ã€‚è‡ªå·±è³‡é‡‘ã§å–å¼•ã™ã‚‹ã€Œãƒ—ãƒãƒƒãƒ—ãƒ•ã‚¡ãƒ¼ãƒ ï¼ˆproprietary trading firmï¼‰ã€ã¨å‘¼ã°ã‚Œã‚‹ä¼æ¥ãŒä¸å¿ƒã§ã€ç±³GETCOï¼ˆ2013å¹´7æœˆã«ç±³Knight Capitalã¨åˆä½µï¼‰ãªã©ãŒæœ‰åã ã€‚ HFTã‚’è¡Œã†ãƒ—ãƒãƒƒãƒ—ãƒ•ã‚¡ãƒ¼ãƒ ã®å¤šãã¯ã€ç±³å›½ãªã©æµ·å¤–ã«æ‹ ç‚¹ã‚’ç½®ã„ã¦ãŠã‚Šã€Tsuru Capitalã®ã‚ˆã†ã«æ—¥æœ¬å›½å†…ã«æ‹ ç‚¹ã‚’ç½®ãä¼æ¥ã¯çã—ã„ã€‚æ ªå¼å£²è²·ã§ã¯ã€æµ·å¤–ä¼æ¥ã§ã‚ã£ã¦ã‚‚å›½å†…ã®è¨¼åˆ¸ä¼šç¤¾ã¨å¥‘ç´„ã—ã€è‡ªç¤¾ã®å–å¼•ãƒ—ãƒã‚°ãƒ©ãƒ ã‚’ãã®è¨¼åˆ¸ä¼šç¤¾ã®ã‚µãƒ¼ãƒãƒ¼ã«é…ç½®ã™ã‚Œã°æ—¥æœ¬å¸‚å ´ã§ã®HFTã¯è¡Œãˆã‚‹ã€‚
udzura 2013/10/07
haskell
ãƒªãƒ³ã‚¯
åŸºæœ¬çš„ãªã“ã¨
å¿…è¦å‘¼ã³ Haskellã®è¨€èªžä»•æ§˜(ja)ã¯å¼ã®è©•ä¾¡é †åºã‚’å®šã‚ã¦ã„ãªã„ãŒã€ãƒ—ãƒã‚°ãƒ©ãƒ ã®è¨ˆç®—é‡ã‚’è¦‹ç©ã‚‚ã‚‹ã«ã¯å…·ä½“çš„ãªè©•ä¾¡æˆ¦ç•¥ã‚’çŸ¥ã£ã¦ã„ã‚‹å¿…è¦ãŒã‚ã‚‹ã€‚ã¨ã„ã£ã¦ã‚‚äº‹æ…‹ã¯å˜ç´”ã§ã€GHCã‚’å§‹ã‚ã¨ã™ã‚‹æœ‰åãªå‡¦ç†ç³»ã¯å…¨ã¦ã€Œå¿…è¦å‘¼ã³(call by need)ã€ã¨ã„ã†è©•ä¾¡æˆ¦ç•¥ã‚’åŸºæœ¬ã«ã—ã¦ã„ã‚‹ã€‚(ã€ŒHaskellã¯é…å»¶è©•ä¾¡ã‚’ã™ã‚‹è¨€èªžã§ã‚ã‚‹ã€ã¨è¨€ã‚ã‚Œã‚‹ãŒã€ã“ã®ã€Œé…å»¶è©•ä¾¡ã€ã¨ã„ã†èªžã¯å¿…è¦å‘¼ã³ã‚’æŒ‡ã™)ã€‚ãã“ã§ã€å¿…è¦å‘¼ã³ã«å¾“ã£ãŸè©•ä¾¡ã‚’æ‰‹å‹•ã§å†ç¾ã™ã‚‹ã“ã¨ãŒã§ãã‚Œã°ã€Haskellãƒ—ãƒã‚°ãƒ©ãƒ ã®è¨ˆç®—é‡ã‚’ãŠãŠã–ã£ã±ã«è¦‹ç©ã‚‚ã‚‹ã“ã¨ãŒã§ãã‚‹ã€‚ä»¥ä¸‹ã§ã¯ãã®æ‰‹é †ã‚’ç´¹ä»‹ã™ã‚‹ã€‚ æ™®é€šã®è¨€èªžã®è©•ä¾¡æˆ¦ç•¥ã¯å€¤å‘¼ã³(call by value)ã¨å‘¼ã°ã‚Œã‚‹ã€‚å€¤å‘¼ã³ã¨å¯¾æ¯”ã—ãŸã¨ãã®å¿…è¦å‘¼ã³ã®å¤§ããªç‰¹å¾´ã¯ã€é–¢æ•°ã‚’å‘¼ã¶éš›ã«ã€å¼•æ•°ã‚’æœªè©•ä¾¡ã®ã¾ã¾æ¸¡ã™ã“ã¨ã§ã‚ã‚‹ã€‚æ¬¡ã®é–¢æ•°ã‚’è€ƒãˆã‚‹ã€‚ inc :: Int -> Int inc n = n + 1 ã“ã‚Œã‚’ä½¿ã£
udzura 2013/10/07
ã‚¹ãƒšãƒ¼ã‚¹ãƒªãƒ¼ã‚¯ã®ç«¯çš„ãªèª¬æ˜Žã‚ã£ãŸ

haskell
ãƒªãƒ³ã‚¯
Functors, Applicatives, And Monads In Pictures - adit.io
Written April 17, 2013 updated: May 20, 2013 Here's a simple value: And we know how to apply a function to this value: Simple enough. Lets extend this by saying that any value can be in a context. For now you can think of a context as a box that you can put a value in: Now when you apply a function to this value, you'll get different results depending on the context. This is the idea that Functors
udzura 2013/04/20
haskell
ãƒªãƒ³ã‚¯
Route 477(2013-04-17)
â– [haskell][types] Haskellã®åž‹ã‚¯ãƒ©ã‚¹ã®å®Ÿç¾æ–¹æ³•ã«ã¤ã„ã¦èª¿ã¹ã¦ã¿ãŸ åž‹ã‚¯ãƒ©ã‚¹ã®å®Ÿè£…ã«ã¤ã„ã¦èª¿ã¹ã¦ã„ãŸã‚‰ã€1988å¹´ã®ã€ŒHow to make ad-hoc polymorphism less ad hocã€ã¨ã„ã†è«–æ–‡ã«è¡Œãå½“ãŸã£ãŸã€‚ http://homepages.inf.ed.ac.uk/wadler/topics/type-classes.html (How to make ad-hoc polymorphism less ad hoc) (Macã ã¨psãƒ•ã‚¡ã‚¤ãƒ«ãŒãã®ã¾ã¾é–‹ã‘ã‚‹ã‚ˆã†ã§ã™) ã“ã‚Œã«ã‚ˆã‚‹ã¨ã€åž‹ã‚¯ãƒ©ã‚¹ã‚’ä½¿ã£ãŸHaskellãƒ—ãƒã‚°ãƒ©ãƒ ã¯ã€åž‹ã‚¯ãƒ©ã‚¹ã‚’ä½¿ã‚ãªã„(ä»£æ•°çš„ãƒ‡ãƒ¼ã‚¿åž‹ã®ã¿ã®)ãƒ—ãƒã‚°ãƒ©ãƒ ã«å¤‰æ›ã§ãã‚‹ãã†ã ã€‚*1 å†…å®¹ã¯ã€Haskellã®classæ§‹æ–‡ã¨instanceæ§‹æ–‡ã®ä½¿ã„æ–¹ã‚’çŸ¥ã£ã¦ã„ã‚‹äººãªã‚‰ã€ä¸Šã‹ã‚‰é †ã«èªã‚“ã§ã„ã‘ã°ç†è§£ã§ãã‚‹ã¨æ€ã„ã¾ã™ã€‚å®Ÿè£…ã®
udzura 2013/04/17
haskell
ãƒªãƒ³ã‚¯
Haskell ã® machines ã«å…¥é–€ã—ã¦ã¿ãŸï¼Œã¨ã„ã†ãŠè©± - KrdLab's blog
ã¯ã˜ã‚ã« io-streams ãƒ‘ãƒƒã‚±ãƒ¼ã‚¸ãŒãƒªãƒªãƒ¼ã‚¹ã•ã‚ŒãŸæŠ˜ã«ãµã¨ã€Œconduitï¼Œpipesï¼Œio-streams ä»¥å¤–ã® streaming data ã‚’æ‰±ã†ãƒ©ã‚¤ãƒ–ãƒ©ãƒªã«ã¯ä½•ãŒã‚ã‚‹ã‚“ã ã‚ã†ã‹ï¼Ÿã€ã¨ç–‘å•ã«æ€ã„ã¤ã¶ã‚„ã„ã¦ã¿ãŸã¨ã“ã‚ï¼Œ machines ãŒã‚ã‚‹ ã¨ã„ã†ã“ã¨ã‚’æ•™ãˆã¦ã„ãŸã ãã¾ã—ãŸï¼Ž æ°—ã«ãªã£ãŸã®ã§èª¿ã¹ã¦ã¿ãŸï¼Œã¨ã„ã†ã®ãŒä»Šå›žã®å†…å®¹ã§ã™ï¼Ž åŸºæœ¬çš„ãªä½¿ã„æ–¹ã«å§‹ã¾ã‚Šï¼Œä½•ã¨ã‹ attoparsec ã‚’çµ„ã¿è¾¼ã‚€ã‚ãŸã‚Šã¾ã§ã¯è¾¿ã‚Šç€ãã¾ã—ãŸï¼ŽãªãŠï¼ŒGHC 7.4.1 ã‚’ä½¿ç”¨ã—ã¦ã„ã¾ã™ï¼Ž è¦‹å‡ºã— ã“ã‚Œã¯ä½•ï¼Ÿ é›°å›²æ°— ã©ã†ä½¿ã†ã®ï¼Ÿ åŸºæœ¬å½¢ Source ã®ä½œæˆ Process ã®ä½œæˆ Transducer ã‚’çµ„ã¿è¾¼ã‚€ è¤‡æ•°å…¥åŠ›ã®å–ã‚Šæ‰±ã„ Parser ã‚’çµ„ã¿è¾¼ã‚€ ãŠã‚ã‚Šã« ã“ã‚Œã¯ä½•ï¼Ÿ ä»Šå›žã®å¯¾è±¡ã¯â†“ã“ã‚Œï¼Ž machines-0.2.3.1 http://hackage.haskell.org/pa
udzura 2013/04/01
haskell
ãƒªãƒ³ã‚¯
ç„¡åŠ¹ãªURLã§ã™
ç„¡åŠ¹ãªURLã§ã™ã€‚ ãƒ—ãƒã‚°ãƒ©ãƒ è¨å®šã®åæ˜ å¾…ã¡ã§ã‚ã‚‹å¯èƒ½æ€§ãŒã‚ã‚Šã¾ã™ã€‚ ã—ã°ã‚‰ãæ™‚é–“ã‚’ãŠã„ã¦å†åº¦ã‚¢ã‚¯ã‚»ã‚¹ã‚’ãŠè©¦ã—ãã ã•ã„ã€‚
udzura 2013/03/24
å®Ÿç”¨çš„ãƒã‚¹ã‚±ãƒ«

haskell
ãƒªãƒ³ã‚¯
http://www.girlloveshaskell.com/index.php
udzura 2013/03/15
wow

haskell
ãƒªãƒ³ã‚¯
VMware Security Solutions
udzura 2013/03/15
ã‚„ã°ãã†â€¦â€¦

web

framework

haskell
ãƒªãƒ³ã‚¯
GitHub - seliopou/toml: A TOML parser written in Haskell
udzura 2013/02/27
ã“ã®ã‚³ãƒ¼ãƒ‰å‹‰å¼·ã«ãªã‚Šãã†

haskell

toml
ãƒªãƒ³ã‚¯
1 2 3 4 æ¬¡ã®ãƒšãƒ¼ã‚¸