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Use bracket or with-style functions to guarantee resource cleanup even on exceptions instead of separate do blocks. Use when writing or reviewing Haskell code that acquires and releases resources.
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SOC 職業分類に基づく
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himari is ncaq's rio-like custom Haskell Prelude. Import it with a single `import Himari`, never `import Himari.Prelude` or other submodules directly. Use when writing or reviewing Haskell code in a project that depends on the himari package.
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Avoid for loops (C-style, for...of, for...in) in TypeScript/JavaScript. Prefer higher-order Array methods like map, filter, find, some, every, reduce. Use when writing or reviewing loops or iteration over arrays, objects, Map, Set, or String.
| name | bracket |
| description | Use bracket or with-style functions to guarantee resource cleanup even on exceptions instead of separate do blocks. Use when writing or reviewing Haskell code that acquires and releases resources. |
| user-invocable | false |
bracketを使うと、
例外が発生した場合でもリソースの解放を確実に行えます。
bracketでリソースの解放処理が書ける時はそちらを使ってください。
わざわざバラバラのdoブロックで書かないでください。
ライブラリにはbracket関数の特化型である関数がしばしば存在します。
例えば、
withAsync :: MonadUnliftIO m => m a -> (Async a -> m b) -> m b
などの関数です。
存在するならばそれを優先します。