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ENCA 5æ—¥ç›®: AsyncFromSyncIterator ã§ yield ãƒªã‚¸ã‚§ã‚¯ãƒˆæ™‚ã«å…ƒã®ã‚¤ãƒ†ãƒ¬ãƒ¼ã‚¿ãƒ¼ã‚’é–‰ã˜ã‚‹ï¼ˆé€²è¡Œä¸ï¼‰
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igrep 2024/12/05
JavaScript

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C++ exceptions under the hood
Index A tiny ABI An ABI to appease the linker Catching what you throw Magic around __cxa_begin_catch and __cxa_end_catch Gcc_except_table and the personality function A nice personality Two-phase handling Catching our first exception _Unwind_ and call frame info Reading a CFI table And suddenly, reflexion in C++ Setting the context for a landing pad Multiple landing pads & the teachings of the gur
igrep 2021/09/09
C++

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GitHub - tc39/proposal-error-cause: TC39 proposal for accumulating errors
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igrep 2021/07/17
javascript

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GitHub - Profpatsch/error: The canonical Haskell Error type
igrep 2021/07/05
haskell

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Jestã§éžåŒæœŸé–¢æ•°ãŒä¾‹å¤–ã‚’æŠ•ã’ã‚‹ã“ã¨ã‚’ãƒ†ã‚¹ãƒˆã™ã‚‹ã€‚ - Qiita
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igrep 2021/05/31
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jest

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Default exception handler in Haskell
Default exception handler in Haskell by Taylor Fausak on April 03, 2021 Have you ever wanted to install a default exception handler in Haskell? Until recently I didnâ€™t think that was possible. Then I found Ivan Gromakovskyâ€™s Handling of Uncaught Exceptions in Haskell blog post, which describes how to print exceptions using displayException rather than show. Ivan accomplishes that with a little kno
igrep 2021/04/13
haskell

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GitHub - kowainik/eio: ðŸŽ¯ IO with Exceptions tracked on the type-level
igrep 2021/03/21
haskell

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JavaScript ã§ã‚«ã‚¹ã‚¿ãƒ ä¾‹å¤–ã‚’ã—ã£ã‹ã‚Šä½¿ã†
JavaScript ã«ã¯ã€ãã“ã‹ã—ã“ã«ç½ ãŒã‚ã‚Šã¾ã™ãŒã€ãã®ä¸ã®1ã¤ã¯ã‚¨ãƒ©ãƒ¼ãƒãƒ³ãƒ‰ãƒªãƒ³ã‚°ã ã¨æ€ã„ã¾ã™ã€‚ ä»Šå›žã¯ã‚¨ãƒ©ãƒ¼ãƒãƒ³ãƒ‰ãƒªãƒ³ã‚°ã«ãŠã„ã¦ã€ã‚ã¾ã‚Šæ´»ç”¨ã•ã‚Œã¦ã„ãªã„æ°—ãŒã™ã‚‹ã€ã‚«ã‚¹ã‚¿ãƒ ä¾‹å¤–ã‚’ã—ã£ã‹ã‚Šä½¿ã£ã¦ã¿ãŸã„ã¨æ€ã„ã¾ã™ã€‚ TL;DR necojackarc/extensible-custom-error ã‚’ä½¿ã†ã¨ã€ã‚¨ãƒ©ãƒ¼ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã‚‚å¼•æ•°ã«å–ã‚Œã‚‹ä¾¿åˆ©ãªã‚«ã‚¹ã‚¿ãƒ ä¾‹å¤–ãŒç°¡å˜ã«å®šç¾©ã§ãã‚‹ã‚ˆï¼ const ExtensibleCustomError = require('extensible-custom-error'); class MyError extends ExtensibleCustomError {} new MyError('message'); // ãƒ¡ãƒƒã‚»ãƒ¼ã‚¸ new MyError(error); // ã‚¨ãƒ©ãƒ¼ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆ new MyError('message', error
igrep 2021/03/17
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TypeScriptã®ç•°å¸¸ç³»è¡¨ç¾ã®ã„ã„æ„Ÿã˜ã®è½ã¨ã—æ‰€ | DevelopersIO
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igrep 2021/03/12
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Rust ã‚¨ãƒ©ãƒ¼å‡¦ç†2020 - é›»æ°—ã²ã¤ã˜ç‰§å ´
ã“ã®ã‚¨ãƒ³ãƒˆãƒªã¯ï¼ŒRust 3 Advent Calendar 2020ã®8æ—¥ç›®ã®è¨˜äº‹ã§ã™ï¼Ž ã¯ã˜ã‚ã« ã‚¨ãƒ©ãƒ¼å‡¦ç†ã®åŸºæœ¬ Result<T, E> Errorãƒˆãƒ¬ã‚¤ãƒˆ ?ã‚ªãƒšãƒ¬ãƒ¼ã‚¿ ãƒ™ã‚¹ãƒˆãƒ—ãƒ©ã‚¯ãƒ†ã‚£ã‚¹ã‚’æ”¯ãˆã‚‹ã‚¯ãƒ¬ãƒ¼ãƒˆ anyhow thiserror failureã‚¯ãƒ¬ãƒ¼ãƒˆã«ã¤ã„ã¦ ã¾ã¨ã‚ è¿½è¨˜ ã¯ã˜ã‚ã« Rustã‚’æ›¸ã„ã¦ã„ã‚‹æ™‚ã«ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³å›ºæœ‰ã®ã‚¨ãƒ©ãƒ¼åž‹ã‚’å®šç¾©ã—ãŸã„å ´åˆãŒã‚ã‚Šã¾ã™ï¼Žã“ã®è¾ºã®ãƒ™ã‚¹ãƒˆãƒ—ãƒ©ã‚¯ãƒ†ã‚£ã‚¹ã¯ä»Šã¾ã§ä½•åº¦ã‹å¤‰åŒ–*1ã—ã¦ãŠã‚Šï¼Œä»Šå¹´ã®9æœˆã«ã‚¨ãƒ©ãƒ¼ãƒãƒ³ãƒ‰ãƒªãƒ³ã‚°ã®ãƒ—ãƒã‚¸ã‚§ã‚¯ãƒˆã‚°ãƒ«ãƒ¼ãƒ—ãŒç™ºè¶³*2ã—ãŸã“ã¨ã‹ã‚‰ã‚‚åˆ†ã‹ã‚‹ã¨ãŠã‚Šï¼Œä»Šå¾Œã‚‚å¤‰åŒ–ã—ã¦ã„ãå¯èƒ½æ€§ãŒæ¿ƒåŽšã§ã™ï¼Ž ã“ã®è¨˜äº‹ã§ã¯ï¼Œã‚¨ãƒ©ãƒ¼å‡¦ç†ã¾ã‚ã‚Šã«é–¢ã™ã‚‹åŸºæœ¬çš„ãªå†…å®¹ã¨ï¼Œç¾æ™‚ç‚¹ã§ã®ãƒ™ã‚¹ãƒˆãƒ—ãƒ©ã‚¯ãƒ†ã‚£ã‚¹ã¨ã•ã‚Œã¦ã„ã‚‹anyhowã¨thiserrorã‚’ç”¨ã„ãŸã‚¨ãƒ©ãƒ¼å‡¦ç†ã«ã¤ã„ã¦ç´¹ä»‹ã—ã¾ã™ï¼Ž ã‚¨ãƒ©ãƒ¼å‡¦ç†ã®åŸºæœ¬ Result<T, E> Rustã«ã¯ä¾‹å¤–
igrep 2021/03/05
rust

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Masking Asynchronous Exceptions
igrep 2021/03/04
haskell

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Timeout.timeout ã‚’å®‰å…¨ã«ä½¿ã†ã®ã¯é›£ã—ã„ | Wantedly Engineer Blog
ã“ã‚“ã«ã¡ã¯ï¼Wantedly ã®ã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ã®ç¸£ã§ã™ã€‚ å…ˆæ—¥ Rails ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã§ ActiveRecord::StatementInvalid: PG::DuplicatePstatement ã¨ã„ã†ã‚¨ãƒ©ãƒ¼ãŒç¢ºçŽ‡çš„ã«ç™ºç”Ÿã™ã‚‹ã¨ã„ã†äº‹è±¡ã«éé‡ã—ã€ãã®åŽŸå› ãŒ Timeout.timeout ã¨é–¢ä¿‚ã—ã¦ã„ã¦ãªã‹ãªã‹é¢ç™½ã‹ã£ãŸã®ã§è¨˜äº‹ã«æ›¸ãèµ·ã“ã™ã“ã¨ã«ã—ã¾ã—ãŸã€‚ ï¼ˆã“ã®è¨˜äº‹ã‚’æ›¸ããŸã‚ã«ä»Šæ”¹ã‚ã¦èª¿ã¹ã¦ã¿ãŸã¨ã“ã‚ã€ https://github.com/rails/rails/pull/41356 ã§ ActiveRecord ã«é–¢ã—ã¦ã¯å•é¡ŒãŒè§£æ±ºã—ã¦ã„ã‚‹ã“ã¨ãŒã‚ã‹ã‚Šã¾ã—ãŸã€‚ãŒã€è¨˜éŒ²ã¨ã—ã¦æŠ•ç¨¿ã—ã¦ãŠãã¾ã™ã€‚ï¼‰ TL;DRRuby ã® Timeout.timeout ã¯éžåŒæœŸä¾‹å¤–ã‚’ç™ºç”Ÿã•ã›ã‚‹éžåŒæœŸä¾‹å¤–ç™ºç”Ÿæ™‚ã« ActiveRecord ã® Connection ã®å†…éƒ¨çŠ¶æ…‹ãŒå£Šã‚ŒãŸã“ã¨ã§ã‚¨ãƒ©ãƒ¼ãŒ
igrep 2021/02/23
Haskellã®maskã¯Rubyã§ã¯Thread.handle_interrupt(Exception => :on_blocking)ãªã®ãã€‚"æœ¬æ¥ã‚„ã‚ŠãŸã‹ã£ãŸã“ã¨ã‚’é”æˆã§ãã¾ã›ã‚“"ã¨ã¯ã„ã†ã‘ã©ãã‚“ãªåŽ³å¯†ãªæ™‚é–“åˆ¶é™ãŒå¿…è¦ãªã‚‰Rubyä½¿ã†ã®æ¢ã‚ã‚‹ã—ã‹ãªã„ã‚ˆã€‚maskã™ã‚‹ã‚ˆã†ãªå‡¦ç†ã£ã¦å¤§æŠµå°ã•ã„ã—

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Maxim Koltsov blog
igrep 2021/01/23
haskell

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Try.do for recoverable errors in Haskell
UPDATE 2021-01-02: I have since written a GHC compiler plugin to implement an alternative ?-based syntax for early return. I prefer that one than use of Try.do, because it doesnâ€™t require any type magic or special instances, and the ? is more readable. UPDATE: Iâ€™ve added a follow-up post to this here, where I address some criticisms of this post. The first half of this post is here. Please read th
igrep 2020/12/25
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haskell

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GitHub - expede/rescue: ðŸš’âœ¨ Rescue: better errors through types (a more type directed MonadThrow/MonadCatch)
igrep 2020/07/28
Haskell

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Haskellã®ä¾‹å¤–å‡¦ç†äº‹æƒ… - Qiita
Haskellã‚’ä½¿ã†ãŸã³ã«ä¾‹å¤–ã«ã¤ã„ã¦èª¿ã¹ç›´ã™ç™–ãŒã¤ã„ã¦ã„ã‚‹ã®ã§ã€è«¸ã€…ã‚’ã¾ã¨ã‚ã¦ãŠãã€‚ TL;DR éƒ¨åˆ†é–¢æ•°ã‚’ä½¿ã†ãªã€‚ å¤±æ•—å¯èƒ½æ€§ã¯Maybeï¼ŸEitherï¼ŸIOï¼Ÿ -> è¿·ã£ãŸã‚‰MonadThrowã‚’ä½¿ãˆã€‚ äºˆã‚ã‚¨ãƒ©ãƒ¼åž‹ã‚’çµ±ä¸€ã—ãªã„ã¨ä¾‹å¤–å‡¦ç†ã‚¯ã‚½ã ã‚‹ã„ã‚“ã ã‘ã© -> SomeExceptionã‚’ä½¿ãˆã€‚ ãƒ©ã‚¤ãƒ–ãƒ©ãƒªã©ã‚Œä½¿ãˆã°ã„ã„ã®ï¼Ÿ -> safe-exceptionsã‚’ä½¿ãˆã€‚ éƒ¨åˆ†é–¢æ•°ã‚’ä½¿ã†ãª æ»ã®åŒ–èº«ã€‚éƒ¨åˆ†é–¢æ•°è‡ªä½“ã‚’é¿ã‘ã‚‹ã—ã‹æ–¹æ³•ã¯ãªã„ã€‚ç”¨æ„ã•ã‚ŒãŸéƒ¨åˆ†é–¢æ•°ã‚’ä½¿ã†å ´åˆã¯å¿…ãšãƒ©ãƒƒãƒ—ã™ã‚‹ã“ã¨ã€‚ ãƒ‘ã‚¿ãƒ¼ãƒ³ãƒžãƒƒãƒã®å¤±æ•—ã‚„undefined, errorç‰ã®ãƒ”ãƒ¥ã‚¢ãªæ–‡è„ˆã§ã®ä¾‹å¤–ã¯ã€IOãƒ¢ãƒŠãƒ‰ã®ä¸ã§ã®ã¿ã‚ãƒ£ãƒƒãƒã™ã‚‹ã“ã¨ãŒã§ãã‚‹ã€‚ã—ã‹ã—ã€ãƒ”ãƒ¥ã‚¢ãªæ–‡è„ˆã§è§£æ±ºã§ãã‚‹å•é¡Œã‚’ç¥žãƒ¢ãƒŠãƒ‰ã§è§£æ±ºã™ã‚‹ã®ã¯ã‚ã¾ã‚Šå¬‰ã—ããªã„ã€‚ãƒ”ãƒ¥ã‚¢ãªã‚‚ã®ã¯ãƒ”ãƒ¥ã‚¢ãªã‚‚ã®ã«ã€ç¥žã®ã‚‚ã®ã¯ç¥žã«è¿”ã™ã¹ãã§ã‚ã‚‹ã€‚ ã‚‚ã—å¤±æ•—ã‚’ã©ã®åž‹ã§è¡¨ã™ã®ã‹è¿·ã£ãŸã‚‰
igrep 2020/05/19
æ¤œæŸ»ä¾‹å¤–ã¨ã—ã¦IO (Either e a)ã‚’æ•¢ãˆã¦ä½¿ã£ã¦ãŸã‘ã©ã€(MonadThrow m, MonadIO m) => m aã‚‚æ‚ªããªã„ã‹ã‚‚ãªã

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Swift 5.x ã®Resultã«å‚™ãˆã‚‹ - Qiita
Swift ã®æ©Ÿèƒ½ææ¡ˆã¯ Swift Evolution ã§è¡Œã‚ã‚Œã‚‹ã®ã§ã™ãŒã€ Swift ã®æ¨™æº–ãƒ©ã‚¤ãƒ–ãƒ©ãƒªã« Result åž‹ã‚’è¿½åŠ ã™ã‚‹ãƒ—ãƒãƒãƒ¼ã‚¶ãƒ« SE-0235 ãŒæ‰¿èªã•ã‚Œã¾ã—ãŸã€‚ãã®çµæžœã€ Swift 5 ã§ Result ãŒæ¨™æº–ãƒ©ã‚¤ãƒ–ãƒ©ãƒªã«è¿½åŠ ã•ã‚Œã¾ã™ã€‚ æœ¬æŠ•ç¨¿ã§ã¯ Result ã¨ã¯ä½•ã‹ ã„ã¤ Result ã‚’ä½¿ã†ã¹ãã‹ Result ã‚’ã©ã®ã‚ˆã†ã«æ‰±ã†ã¹ãã‹ ä»Šã®ã†ã¡ã« Result ã«å‚™ãˆã‚‹æ–¹æ³• ã‚’èª¬æ˜Žã—ã¾ã™ã€‚ Result ã¨ã¯ä½•ã‹ Swift ã«ã¯ã‚µãƒ¼ãƒ‰ãƒ‘ãƒ¼ãƒ†ã‚£è£½ã® antitypical/Result ã¨ã„ã†äººæ°—ãƒ©ã‚¤ãƒ–ãƒ©ãƒªãŒã‚ã‚Šã€ Result ã«é¦´æŸ“ã¿ã®ã‚ã‚‹äººã‚‚å¤šã„ã¨æ€ã„ã¾ã™ã€‚æœ¬ç¯€ã§ã¯ã€ Result ã«é¦´æŸ“ã¿ã®ãªã„äººã®ãŸã‚ã« Result ã«ã¤ã„ã¦ç°¡å˜ã«èª¬æ˜Žã—ã¾ã™ã€‚ Result ã¯ã‚¨ãƒ©ãƒ¼ãƒãƒ³ãƒ‰ãƒªãƒ³ã‚°ã«ç”¨ã„ã‚‰ã‚Œã‚‹åž‹ã§ã€æ¬¡ã®ã‚ˆã†ã«å®£è¨€ã•ã‚Œã¾ã™ã€‚
igrep 2020/05/10
Swift

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