{"blog_url":"https://n9d.hatenadiary.org/","description":"\u30ea\u30b9\u30c8\u306e\u76f4\u7a4d\uff08\u30c7\u30ab\u30eb\u30c8\u7a4d\u3001\u30ab\u30eb\u30c6\u30b7\u30a2\u30f3\uff09\u3092\u5185\u5305\u8868\u8a18\u2192do\u8a18\u6cd5\u2192\u30e2\u30ca\u30c9\u2192concatMap\u306e\u5f62\u3067\u8868\u3057\u3066\u307f\u308b\u3002 \u30e2\u30ca\u30c9\u3068do\u304c\u540c\u3058\u306a\u306e\u304c\u308f\u304b\u3063\u3066\u5b9f\u9a13 \u5185\u5305\u8868\u8a18 [[x,y] | x <- [1,2] , y <- [3,4]] do\u8a18\u6cd5 return\u304c\u5165\u3063\u3066\u3044\u308b\u3068\u3053\u308d\u3067\u82e5\u5e72 \u30e2\u30ca\u30c9\u3092\u610f\u8b58\u3055\u305b\u308b do {x <- [1,2] ; y <- [3,4] ; return [x,y]}retrun\u3092\u6d88\u3059 do {x <- [1,2] ; y <- [3,4] ; [[x,y]]} \u30d0\u30a4\u30f3\u30c9(>>=) [1,2] >>= \\x -> [3,4] >>= \\y -> [[x,y]]\u308f\u304b\u308a\u3084\u3059\u304f\u7d50\u5408\u3092\u62ec\u5f27\u3067\u8868\u2026","categories":[],"provider_name":"Hatena Blog","version":"1.0","author_url":"https://blog.hatena.ne.jp/n9d/","author_name":"n9d","provider_url":"https://hatena.blog","image_url":null,"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fn9d.hatenadiary.org%2Fentry%2F20100831%2F1283229500\" title=\"\u30ea\u30b9\u30c8\u306e\u76f4\u7a4d\uff08\u30c7\u30ab\u30eb\u30c8\u7a4d\u3001\u30ab\u30eb\u30c6\u30b7\u30a2\u30f3\uff09\u3092\u5185\u5305\u8868\u8a18\u2192do\u8a18\u6cd5\u2192\u30e2\u30ca\u30c9\u2192concatMap\u306e\u5f62\u3067\u8868\u3057\u3066\u307f\u308b\u3002  - \u8a08\u7b97\u6a5f\u3068\u622f\u308c\u308b\u65e5\u3005\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","type":"rich","width":"100%","blog_title":"\u8a08\u7b97\u6a5f\u3068\u622f\u308c\u308b\u65e5\u3005","url":"https://n9d.hatenadiary.org/entry/20100831/1283229500","published":"2010-08-31 13:38:20","height":"190","title":"\u30ea\u30b9\u30c8\u306e\u76f4\u7a4d\uff08\u30c7\u30ab\u30eb\u30c8\u7a4d\u3001\u30ab\u30eb\u30c6\u30b7\u30a2\u30f3\uff09\u3092\u5185\u5305\u8868\u8a18\u2192do\u8a18\u6cd5\u2192\u30e2\u30ca\u30c9\u2192concatMap\u306e\u5f62\u3067\u8868\u3057\u3066\u307f\u308b\u3002 "}