{"categories":["Haskell"],"title":"","author_name":"pokarim","description":"\"Programming with Arrows\"\u306e\u30012.1 Arrows and pairs\u3092\u8aad\u3080\u3002 \u6700\u521d\u306b\u3042\u3089\u3059\u3058\u3092\u3002 2.1\u3067\u306f\u3001Arrow\u30af\u30e9\u30b9\u306e\u30e1\u30bd\u30c3\u30c9\u3068\u3057\u3066\u3001 \u307e\u305a(&&&)\u3092\u5c0e\u5165\u3057\u3066\u3001\u305d\u306e\u5f8c\u3001\u3088\u308a\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u306a\u6f14\u7b97\u5b50 (***)\u3092\u5c0e\u5165\u3059\u308b\u3002\uff08(***)\u3092\u4f7f\u3048\u3070\u3001(&&&)\u306f\u7c21\u5358\u306b\u4f5c\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002\uff09 \u305d\u3057\u3066\u3001\u3055\u3089\u306b\u3082\u3063\u3068\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u306a\u30e1\u30bd\u30c3\u30c9first\u3092\u5c0e\u5165\u3059\u308b\u3002 \u6700\u5f8c\u306f\u3001first\u3092\u4f7f\u3063\u3066second\u3092\u5b9a\u7fa9\u3001first\u3068second\u3092\u4f7f\u3063\u3066(***)\u3092\u5b9a\u7fa9\u3001 (***)\u3092\u4f7f\u3063\u3066(&&&)\u304c\u5b9a\u7fa9\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308b\u3001\u3068\u3002 http://www.haskell.org/ghc/docs\u2026","version":"1.0","provider_url":"https://hatena.blog","author_url":"https://blog.hatena.ne.jp/pokarim/","width":"100%","image_url":null,"height":"190","provider_name":"Hatena Blog","blog_url":"https://pokarim.hatenadiary.org/","type":"rich","published":"2007-05-24 00:11:01","url":"https://pokarim.hatenadiary.org/entry/20070524/1180019461","blog_title":"Conceptual Contexture","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fpokarim.hatenadiary.org%2Fentry%2F20070524%2F1180019461\" title=\" - Conceptual Contexture\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>"}