[B! ghc] Nnwwwã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

Nnwww id:Nnwww

ghcã«é–¢ã™ã‚‹Nnwwwã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (26)

${{author_name}}$

{{{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}}

ã‚ãªãŸã®çŸ¥ã‚‰ãªã„Semigroupã®ä¸–ç•Œ - ã‚ã©ã‘ãªã„è©±
è‡ªåˆ†ã§å®šç¾©ã™ã‚‹ãƒ‡ãƒ¼ã‚¿ã®ä¸ã«ã¯ã€è¶³ã—ç®—ã—ãŸããªã‚‹ã‚ˆã†ãªãƒ‡ãƒ¼ã‚¿ãŒã‚ã‚‹ã€‚ãŸã¨ãˆã°ã€é€ä¿¡ã¨å—ä¿¡ã®ã‚«ã‚¦ãƒ³ã‚¿ãƒ¼ã‚’å®šç¾©ã—ãŸã¨ã—ã‚ˆã†ã€‚ data Metrics = Metrics { rx :: Int , ts :: Int } deriving (Eq, Show) ã“ã‚Œã¯ä»¥ä¸‹ã®ã‚ˆã†ã«è¶³ã—ç®—ã§ãã‚‹ã¨å¬‰ã—ã„ã ã‚ã†ã€‚ > Metrics 1 2 + Metrics 3 4 Metrics {rx = 4, ts = 6} ã—ã‹ã—ã“ã‚Œã¯ Num ã®ã‚¤ãƒ³ã‚¹ã‚¿ãƒ³ã‚¹ã«ã™ã¹ãã§ã¯ãªã„ã€‚ã“ã®ãƒ‡ãƒ¼ã‚¿åž‹ã«æŽ›ã‘ç®—ã¯å®šç¾©ã§ããªã„ã‹ã‚‰ã ã€‚ã‹ã¨ã„ã£ã¦ã€addMetrics ã¿ãŸã„ãªé–¢æ•°ã‚’å®šç¾©ã™ã‚‹ã®ã¯ã‹ã£ã“æ‚ªã„ã€‚ > Metrics 1 2 `addMetrics` Metrics 3 4 Metrics {rx = 4, ts = 6} ã“ã®ã‚ˆã†ã«æ¼”ç®—åãŒä¸€å€‹ã ã‘æ¬²ã—ã„ã¨æ€ã£ãŸã‚‰ã€ãã‚Œã¯å¤šåˆ† Monoid ã ã€‚ import
Nnwww 2018/03/09
ghc

haskell

breaking_change
ãƒªãƒ³ã‚¯
Introduction to Singletons (Part 1)
Nnwww 2018/01/05
ã¯ã™ã‘ã®ä¾å˜åž‹ã«å¿…é ˆãªsingletonã¨ãã®è£œåŠ©ãƒ‘ãƒƒã‚±ãƒ¼ã‚¸ã«ã¤ã„ã¦ã€‚æœ€å¾Œã®ã‚³ãƒ¼ãƒ‰å…¨æ™¯ã«ã¦ã€ãƒ‘ãƒƒã‚±ãƒ¼ã‚¸ã®æœ‰ç„¡ã‚’å¯¾æ¯”ã—ã¦ãã‚Œã‚‹ã®ãŒå¬‰ã—ã„ã€‚

Haskell

GHC

DependentType
ãƒªãƒ³ã‚¯
Free Haskell Book
If you found this free Haskell book useful, then please share it â¤ðŸ˜Š Chapters Getting started with Haskell Language Overloaded Literals Foldable Traversable Lens QuickCheck Common GHC Language Extensions Free Monads Type Classes IO Record Syntax Partial Application Monoid Category Theory Lists Sorting Algorithms Type Families Monads Stack Generalized Algebraic Data Types Recursion Schemes Data.Tex
Nnwww 2017/12/28
ã“ã‚Œãžé›†åˆçŸ¥ã‹/ã“ã®æ‰‹ã®ã¯ãƒ‡ãƒ¼ã‚¿åŽé›†ã‚½ãƒ¼ã‚¹ã®é«˜å“è³ªãƒ»ä½ŽãƒŽã‚¤ã‚ºãŒå¤§äº‹ã§ã—ã‚‡ã†ã‹ã‚‰ã€æ¬§ç±³ã®ã‚»ãƒŸãƒ—ãƒæ–‡åŒ–ã¨åˆã†ã‚ã‘ã§ã™ãã€‚

Haskell

GHC

book
ãƒªãƒ³ã‚¯
Haskell in Production: Beware Idle Garbage Collection! :: Capital Match Tech Blog
Nnwww 2017/11/29
å¯¿å‘½ãŒé•·ã„å¤§è¦æ¨¡ãƒ‡ãƒ¼ã‚¿ã¯GCã®æ™‚é–“ã‚’å¢—å¤§ã•ã›ã‚‹â€¦compactã§ã‚¤ãƒŸãƒ¥ãƒ¼ã‚¿ãƒ–ãƒ«ãªã‚‚ã®ã«ã¤ã„ã¦ã¯æ”¹å–„ã§ãã‚‹ã¯ãšã€‚StorableãªVectorã‚’å¤§ããã‚¢ãƒã‚±ãƒ¼ãƒˆã—ãŸå ´åˆã€gcã®ã‚³ã‚¹ãƒˆã¯ã©ã†ãªã‚‹ã‚“ã ã‚ã†ã€‚

ghc

haskell
ãƒªãƒ³ã‚¯
INLINE pragmas in the Safe library
Summary: The Safe library has lots of small functions, none of which have INLINE pragmas on them. The lack of INLINE pragmas probably has no effect on the optimisation. I was recently asked a question about the Safe library: I was wondering why you didn't use any INLINE pragmas in the Safe library. I'm not a Haskell expert yet, but I've noticed that in many other libraries most one-liners are anno
Nnwww 2017/11/12
haskell

ghc

performance
ãƒªãƒ³ã‚¯
RULESã«ã‚ˆã‚‹ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«æ™‚ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚° - www.kotha.netã®è£
ã“ã‚Œã¯Haskell Advent Calendar 2013ã®(3+Ï€)æ—¥ç›®ã®è¨˜äº‹ã§ã™ã€‚ (3 + pi)ã‚„(quot 7 8)ã®ã‚ˆã†ãªå˜ç´”ãªå®šæ•°å¼ã¯ã€ghc -OãŒè¡Œãªã†å®šæ•°ç•³ã¿è¾¼ã¿ã«ã‚ˆã£ã¦ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«æ™‚ã«è¨ˆç®—ã•ã‚Œã‚‹ã€‚uncurry (*) (3, max 5 2)ã®ã‚ˆã†ãªã‚„ã‚„è¤‡é›‘ãªå¼ã‚‚ã€ã‚¤ãƒ³ãƒ©ã‚¤ãƒ³å±•é–‹ã—ã¦ã‹ã‚‰å®šæ•°ç•³ã¿è¾¼ã¿ã‚’ã™ã‚‹ã“ã¨ã§ã‚„ã¯ã‚Šã‚³ãƒ³ãƒ‘ã‚¤ãƒ«æ™‚ã«æ•´æ•°ãƒªãƒ†ãƒ©ãƒ«ã«ã¾ã§ç°¡ç´„ã•ã‚Œã‚‹ã€‚ ã“ã‚Œã¯ä¸€è¦‹ä¸‡èƒ½ã ãŒã€å†å¸°çš„ãªé–¢æ•°ãŒä¸€ã¤ã§ã‚‚ã‚ã‚‹ã¨ä½•ã‚‚ã§ããªããªã‚‹ã€‚GHCãŒå†å¸°é–¢æ•°ã‚’ã‚¤ãƒ³ãƒ©ã‚¤ãƒ³åŒ–ã—ãªã„ã‹ã‚‰ã ã€‚(sum [1])ã§ã™ã‚‰å®Ÿè¡Œæ™‚ã®ãƒ«ãƒ¼ãƒ—ã«ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«ã•ã‚Œã‚‹*1ã€‚ ã©ã†ã—ã¦ã‚‚ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«æ™‚ã«è¨ˆç®—ã—ã¦ã»ã—ã„é–¢æ•°ãŒã‚ã‚‹å ´åˆã¯ã©ã†ã—ãŸã‚‰è‰¯ã„ã‹ã€‚ä¸€ã¤ã®æ–¹æ³•ã¯Template Haskell(ja)ã‚’ä½¿ã†ã“ã¨ã ãŒã€ç‰¹åˆ¥ãªæ§‹æ–‡ã‚’ä½¿ã‚ãªã‘ã‚Œã°ã„ã‘ãªã„ã“ã¨ã€-fwarn-unused-binds(ja)ã‚’ã¯ã˜ã‚ã¨ã—
Nnwww 2017/11/12
Haskell

ghc

programming
ãƒªãƒ³ã‚¯
Stack + nix error Â· Issue #2130 Â· commercialhaskell/stack
Nnwww 2017/09/21
nixã§zlibãŒä¸Šæ‰‹ããƒªãƒ³ã‚¯ã§ããªã„å•é¡Œã®è§£æ±ºç–ã€‚é–‹ç™ºè€…ã‚‚åŽŸå› ä¸æ˜Žã‚‰ã—ãã€ç§ã‚‚ã“ã‚Œã«æ•°æ™‚é–“æº¶ã‹ã—ã¾ã—ãŸâ€¦

nix

ghc
ãƒªãƒ³ã‚¯
MonadIO Considered Harmful
Now that we've got the click-bait out of the way (sorry about that) we can have a nice chat! Here's my point: MonadIO, and of course IO, are too general. This isn't news really, it's has been addressed in many ways by many people. Options presented in the past include using Free or Free-er monads (e.g. the Eff Monad), and these tend to work pretty well, but they're all-encompassing and intrusive,
Nnwww 2017/09/20
MonadIOã¯ã»ã¼æ„å‘³ã‚’æŒãŸãªã„ã®ã§MonadFileã‚„MonadLogã®ã‚ˆã†ã«ç´°ã‹ãåˆ†ã‘é–¢æ•°ã‚’åˆ¶ç´„ã—ã€çµ„ã¿åˆã‚ã›ãŸã‘ã‚Œã°ConstraintKindsã§è¡Œã†ã¨åž‹ã‚¯ãƒ©ã‚¹ã ã‘ã§Freeãƒ¢ãƒŠãƒ‰ã‚ã„ã¦æ¸…æ½”ã«ãªã‚‹ã€‚fpcoã§ã¯ReaderT IOã¨Has~åž‹ã‚¯ãƒ©ã‚¹ã¨å…±ã«æŽ¨å¥¨ã•ã‚Œã¦ã„ãŸã€‚

Haskell

ghc
ãƒªãƒ³ã‚¯
coxswain Â· Wiki Â· Glasgow Haskell Compiler / GHC Â· GitLab
Nnwww 2017/09/17
GHC devã®MLã«æµã‚Œã¦ãŸã‘ã©ã€ã“ã‚Œã¯æŽ¡ç”¨æœªæº€ã®è©±ãªã®ã‹ãª?row typeã¯å…¬å¼ã«æ³¨åŠ›ã•ã‚Œã¦ã‚‚å¬‰ã—ã„ãã‚‰ã„é‡è¦ã ã¨æ€ã†ã‘ã©â€¦

ghc

type system
ãƒªãƒ³ã‚¯
Reddit - Dive into anything
Nnwww 2017/09/11
fpcoã§ã‚‚æ‰‹ã“ãšã‚‹haskellã®staticãƒã‚¤ãƒŠãƒªç”Ÿæˆã§ã™ãŒ-optl-staticãŒé–“é•ã„ã§å®Ÿã¯ld-options: -staticã™ã‚‹ã ã‘ã ã£ãŸã“ã¨ãŒåˆ¤æ˜Žã—ã¦ãŸ

Haskell

ghc

environment
ãƒªãƒ³ã‚¯
Static compilation with Stack - FP Complete
In our last blog post we showed you the new docker init executable pid1. What if we wanted to use our shiny new pid1 binary on a CentOS Docker image but we compiled it on Ubuntu? The answer is that it wouldnâ€™t likely work. All Linux flavors package things up a little differently and with different versions and flags. If we were to compile pid1 completely static it could be porta ble (within a given
Nnwww 2017/08/05
Haskell

GHC

Docker

Linux
ãƒªãƒ³ã‚¯
å¿«é€Ÿã®Extensible effects - ãƒ¢ãƒŠãƒ‰ã¨ã‚ãŸã—ã¨ã‚³ãƒ¢ãƒŠãƒ‰
extensibleã¯æ‹¡å¼µå¯èƒ½ãƒ¬ã‚³ãƒ¼ãƒ‰ã ã‘ã§ãªãæ‹¡å¼µå¯èƒ½ä½œç”¨(extensible effects)ã‚‚ç”¨æ„ã—ã¦ã„ã‚‹ã€‚æ‹¡å¼µå¯èƒ½ä½œç”¨ã¯ä¸€æ™‚æœŸHaskellç•Œéšˆã§è©±é¡Œã«ãªã£ãŸã‚‚ã®ã®ã€ä»Šã§ã¯äººæ°—ã‚‚ä¸‹ç«ã«ãªã£ã¦ã—ã¾ã£ãŸã€‚æ–°ã—ã„ãƒãƒ¼ã‚¸ãƒ§ãƒ³ã‚’ãƒªãƒªãƒ¼ã‚¹ã—ãŸä»Šã€æ‹¡å¼µå¯èƒ½ä½œç”¨ã®å‹•æ©Ÿã¨ä½¿ã„æ–¹ã«ã¤ã„ã¦æ”¹ã‚ã¦ç´¹ä»‹ã—ã‚ˆã†ã€‚ é›£è¡Œã®ä¸€æ¬¡é–¢æ•° Haskellã§ãƒ¢ãƒŠãƒ‰ã‚’ã‚«ã‚¹ã‚¿ãƒžã‚¤ã‚ºã™ã‚‹æ–¹æ³•ã¨ã—ã¦ã¯ã€transf ormersã®ãƒ¢ãƒŠãƒ‰å¤‰æ›åãŒã‚ˆãä½¿ã‚ã‚Œã¦ã„ã‚‹ã€‚ãƒ¢ãƒŠãƒ‰å¤‰æ›åã¯ã€ãƒ¢ãƒŠãƒ‰ã‚’ãƒ‘ãƒ©ãƒ¡ãƒ¼ã‚¿ã¨ã—ã¦å–ã‚Šã€æ–°ãŸãªèƒ½åŠ›ã‚’ä»˜ä¸Žã—ãŸãƒ¢ãƒŠãƒ‰ã«ã™ã‚‹æ§‹é€ ã ã€‚ä¾‹ãˆã°ã€StateT sã¯ãƒ¢ãƒŠãƒ‰å¤‰æ›åã®ä¸€ã¤ã§ã‚ã‚‹ã€‚ä»»æ„ã®ã‚¢ã‚¯ã‚·ãƒ§ãƒ³m aã¯liftã‚’ä½¿ã£ã¦StateT s m aã«å¤‰æ›ã§ãã‚‹ã€‚ newtype StateT s m a = StateT { runStateT :: s -> m (a, s) } ä»–ã«ã‚‚ReaderT, Write
Nnwww 2017/08/03
åŠ›ã‚’æ„Ÿã˜ã‚‹â€¦(Ë˜Ï‰Ë˜)

Haskell

effect

ghc
ãƒªãƒ³ã‚¯
The Has Type Class Pattern | HackerNoon
Too Long; Didn't ReadThe <code class="markup--code markup--p-code">Has</code> type class patterns are simple but <a href="https://hackernoon.com/tagged/surprisingly" target="_blank">surprisingly</a> useful. Iâ€™ll walk through some examples. The Has type class patterns are simple but surprisingly useful. Iâ€™ll walk through some examples. Use Case 1: Collecting allÂ Images Imagine you are working on a
Nnwww 2017/07/16
lensã®æœ‰ã‚Šé›£ã•ãŒåˆ†ã‹ã‚‹ãŒæ°—è»½ã«å…¥ã‚Œã‚‰ã‚Œãªã„

Haskell

ghc
ãƒªãƒ³ã‚¯
Notions of Computations and Effects - Just $ A sandbox
å‰å›žã®effect systemã«å¯¾ã™ã‚‹ãƒœãƒ¤ã‚ã€ã‚ã‚‹ã„ã¯äºˆè¨€ãŒè‰²ã‚“ãªäººã«èªã¾ã‚ŒãŸã¿ãŸã„ãªã®ã§èˆˆå‘³ãŒã‚ã‚‹äººãŒä¸€å®šæ•°ã„ã‚‹ãªã‚‰effect systemã®ç´¹ä»‹è¨˜äº‹ã‚’ã¡ã‚ƒã‚“ã¨æ›¸ã“ã†ã¨æ€ã£ãŸæ¬¡ç¬¬ã€‚ ã¨ã„ã†ã‚ã‘ã§monadã‚’å‰æã¨ã—ã¦ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°è¨€èªžçš„ãªè¦‹æ–¹ã¨åœè«–çš„ãªè¦‹æ–¹ã‚’é€šã—ã¦effectã«é–¢ã™ã‚‹ãŠè©±ã‚’ã—ã¦ã¿ã¾ã™ã€‚ æ³¨æ„ ä»¥ä¸‹ã®ãƒ—ãƒã‚°ãƒ©ãƒ ã¯Haskellã«å¯„ã›ãŸã‚ªãƒ¬ã‚ªãƒ¬syntaxã§å®Ÿéš›ã«ãã†ã„ã†å®Ÿè£…ãŒã‚ã‚‹ã‚ã‘ã˜ã‚ƒãªã„ã®ã§æ³¨æ„ã—ã¦ãã ã•ã„ã€‚å®Ÿéš›ã®å®Ÿè£…ã•ã‚Œã¦ã„ã‚‹è¨€èªžã®è©±ã¯æœ€å¾Œã«å°‘ã—ã—ã¾ã™ã€‚ programming with effects effectã¯é€šå¸¸type-and-effect-systemã¨å‘¼ã°ã‚Œã‚‹ã‚ˆã†ã«ã‚ã‚‹æ„å‘³ã§ä¸€ç¨®ã®åž‹ã‚·ã‚¹ãƒ†ãƒ ã®ã‚ˆã†ãªã‚‚ã®ã§ã™ã€‚åž‹ã‚·ã‚¹ãƒ†ãƒ ãŒãƒ—ãƒã‚°ãƒ©ãƒ ã®å…¥åŠ›ã¨å‡ºåŠ›ã®å€¤ã‚’è¦‹ç©ã‚‚ã‚‹ä»•çµ„ã¿ã ã£ãŸã®ã«å¯¾ã—ã€ã‚¨ãƒ•ã‚§ã‚¯ãƒˆã‚·ã‚¹ãƒ†ãƒ ã¯ãƒ—ãƒã‚°ãƒ©ãƒ ã‚’å®Ÿè¡Œã—ãŸéš›ã«ã€Œèµ·ãã†ã‚‹ã€ã‚¨ãƒ•ã‚§ã‚¯ãƒˆã‚’ã‚³ãƒ³
Nnwww 2017/07/15
ä¸¦åˆ—OCamlã®algebraic effectãŒã—ã‚“ã©ã„ãªãƒ¼ã¨æ€ã£ã¦ã„ãŸã‚“ã§ã™ãŒã€æš—é»™çš„ã«ã™ã‚‹ã¨ç¶ºéº—ã«ãªã‚‹ã‚“ã§ã™ã/ç¾åœ¨ãƒ¡ãƒ³ãƒ†ã•ã‚Œã¦ã„ã‚‹ExtEffå®Ÿè£…ã¯freer-effectsãªã®ã§ã™ãŒã€ãµã¿ã•ã‚“ã®extensibleã‚‚é€Ÿåº¦ãŒå‡„ã„

effect

GHC

OCaml
ãƒªãƒ³ã‚¯
Reddit - Dive into anything
Nnwww 2017/07/10
AtomicCounteræœ€é€Ÿã€MVarã®å…¬å¹³æ€§ã¯ã‘ã£ã“ã†å¤§ãã„ã®ã§æ¥½è¦³çš„ã«ã¯TVarã€ã‚„ã¯ã‚ŠCASã¯é€Ÿã„

GHC

Haskell
ãƒªãƒ³ã‚¯
Reddit - Dive into anything
The Haskell programming language community. Daily news and info about all things Haskell related: practical stuff, theory, types, libraries, jobs, patches, releases, events and conferences and more...
Nnwww 2017/06/26
GHCã¯æ£æ ¼ãªæœ«å°¾å†å¸°ã‚’Cã®FFIå‘¼ã³å‡ºã—ã¨åŒç‰ä»¥ä¸Šã«æœ€é©åŒ–ã™ã‚‹/GHCã¯FFIã‚’ãƒ–ãƒ©ãƒƒã‚¯ãƒœãƒƒã‚¯ã‚¹ã¨ã—ã¦æ‰±ã†ãŸã‚å”èª¿çš„ã«æœ€é©åŒ–ã•ã‚Œãšã€çµæžœCå´ã®æ¯”é‡ãŒå¤§ãããªã„ã¨ãƒ¡ãƒªãƒƒãƒˆãŒå°‘ãªã„

Haskell

ghc

programming

performance
ãƒªãƒ³ã‚¯
runST and function composition
The short answer is that type inference doesn't always work with higher-rank types. In this case, it is unable to infer the type of (.), but it type checks if we add an explicit type annotation: > :m + Control.Monad.ST > :set -XRankNTypes > :t (((.) :: ((forall s0. ST s0 a) -> a) -> (a -> forall s1. ST s1 a) -> a -> a) runST return) $ True (((.) :: ((forall s0. ST s0 a) -> a) -> (a -> forall s1. S
Nnwww 2017/06/22
rank2typeã‚’é€šå¸¸ã®rank1typeã«åŸ‹ã‚è¾¼ã‚€ã“ã¨ãŒå‡ºæ¥ãªã„ã®ã§ã€something . runSTã®ã‚ˆã†ãªé–¢æ•°åˆæˆã¯æ»ã¬ã€‚ã—ã‹ã—ãã®ã¾ã¾ã ã¨runST $ doãŒæ»ã¬ã®ã§é–¢æ•°é©ç”¨æ¼”ç®—åã ã‘ã¯ç‰¹åˆ¥ãªãƒ«ãƒ¼ãƒ«ãŒé©ç”¨ã•ã‚Œã¦ã„ã‚‹

GHC

Haskell
ãƒªãƒ³ã‚¯
Pattern synonymsã®ä½¿ã„é“ - maoeã®ãƒ–ãƒã‚°
ã‚‚ã†ã™ãå‡ºã‚‹å‡ºã‚‹ã¨è¨€ã‚ã‚Œç¶šã‘ã¦ä¹…ã—ã„GHC 7.8ã¯ã€å¤§ãã‚ã®æ–°æ©Ÿèƒ½ãŒã„ãã¤ã‚‚å…¥ã‚‹ã€‚ãã®ã†ã¡ã®ä¸€ã¤ãŒpattern synonymsã¨ã„ã†è¨€èªžæ‹¡å¼µã§ã€ã“ã‚Œã¾ã§ç¬¬ä¸€ç´šå¸‚æ°‘ã§ãªã‹ã£ãŸãƒ‘ã‚¿ãƒ¼ãƒ³ã‚’ã€å†åˆ©ç”¨å¯èƒ½ãªéƒ¨å“ã¨ã—ã¦æ‰±ãˆã‚‹ã‚ˆã†ã«ã™ã‚‹ä»•çµ„ã¿ã€‚ãƒã‚±ãƒƒãƒˆãŒç™»éŒ²ã•ã‚Œã¦ã‹ã‚‰3å¹´è¶Šã—ã«å®Ÿç¾ã•ã‚ŒãŸã€‚ å‚è€ƒè³‡æ–™ã¨ã—ã¦ã¯ 7.3. Syntactic extensions PatternSynonyms â€“ GHC PatternSynonyms - ghc trac : haskell ã‚ãŸã‚Šã‚’èªã‚€ã¨è‰¯ã„ã€‚ å…ˆæ—¥ãŸã¾ãŸã¾pattern synonymsã®ã‚ˆã„ä½¿ã„ã©ã“ã‚ã«éé‡ã—ãŸã®ã§ç´¹ä»‹ã™ã‚‹ã€‚ãã£ã‹ã‘ã¯ data List m a = Nil | Cons a (m (List m a))ã¿ãŸã„ãªãƒªã‚¹ãƒˆã£ã¦ã©ã£ã‹ã®ãƒ‘ãƒƒã‚±ãƒ¼ã‚¸ã«ãªã„ã®ã‹ãªâ€” Mitsutoshi Aoe/maoe (@ma0e) March 26
Nnwww 2017/06/06
view patternã¯çŸ¥ã£ã¦ãŸã‘ã©ã€çµæžœã‚’æŸç¸›ã™ã‚‹éƒ¨åˆ†æ›¸ã„ã¦è‡ªä½œãƒ‘ã‚¿ãƒ¼ãƒ³ã¾ã§æŒã£ã¦ã„ãæ©Ÿèƒ½ã‚‚æœ‰ã£ãŸã®ã‹ã€ã‹ã£ã“ã„ã„

haskell

ghc
ãƒªãƒ³ã‚¯
Improvements to deriving in GHC 8.2 - Ryan Scott
Weâ€™re drawing closer to a release of GHC 8.2, which will feature a variety of enhancements to GHCâ€™s deriving-related extensions. None of the improvements are particularly revolutionary, and for most code, you wonâ€™t notice a difference. But there are quite a few quality-of-life fixes that should make doing certain things with deriving a little less of a hassle. Deriving strategies The largest chang
Nnwww 2017/05/08
Haskell

ghc
ãƒªãƒ³ã‚¯
compact
Nnwww 2017/04/10
GHC8.2ã‹ã‚‰ä½¿ãˆã‚‹compact regionã®ãƒ¦ãƒ¼ã‚¶ãƒ©ã‚¤ãƒ–ãƒ©ãƒª,ä¸–ä»£åˆ¥ã‚³ãƒ”ãƒ¼gcã®ãƒ¬ã‚¤ãƒ†ãƒ³ã‚·å…‹æœã«ä½¿ãˆã‚‹ã ã‚ã†ã‘ã©ç´”ç²‹ãªãƒ‡ãƒ¼ã‚¿ã®ã¿ã¨ã„ã†ã®ãŒå¾®å¦™â€¦

ghc

gc
ãƒªãƒ³ã‚¯
1 2 æ¬¡ã®ãƒšãƒ¼ã‚¸