{"type":"rich","url":"https://ksmakoto.hatenadiary.com/entry/2014/05/22/223223","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fksmakoto.hatenadiary.com%2Fentry%2F2014%2F05%2F22%2F223223\" title=\"foldr\u3067\u30bf\u30d7\u30eb\u3092\u6e21\u3059\u5834\u5408\u306e\u6ce8\u610f - ksmakoto\u306ehatenadiary\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","description":"foldr\u306f\u305d\u306e\u5b9a\u7fa9\u304b\u3089\u3001\u7121\u9650\u30ea\u30b9\u30c8\u306b\u5bfe\u3057\u3066\u3082\u4f7f\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u304c\u3001\u6642\u306b\u306f\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002\u305f\u3068\u3048\u3070\u3001\u30bf\u30d7\u30eb\u3092\u53d7\u3051\u6e21\u3059\u3088\u3046\u306a\u5834\u5408\u306b\u306f\u6ce8\u610f\u3057\u306a\u3044\u3068\u3001\u7121\u9650\u30ea\u30b9\u30c8\u306b\u5bfe\u3057\u3066\u6b62\u307e\u3089\u306a\u304f\u306a\u308a\u307e\u3059\u3002Stackoverflow\u3067\u898b\u639b\u3051\u305f\u30ea\u30b9\u30c8\u30922\u672c\u306b\u5206\u3051\u308b\u30b3\u30fc\u30c9 http://stackoverflow.com/a/7412022 \u3067\u3001\u3061\u3087\u3046\u3069\u305d\u306e\u30d1\u30bf\u30fc\u30f3\u306b\u306f\u307e\u308a\u307e\u3057\u305f\u306e\u3067\u3001\u7c21\u5358\u306a\u30e1\u30e2\u3068\u3057\u3066\u6b8b\u3057\u307e\u3059\u3002--\u554f\u984c\u3042\u308a\u3002\u8a18\u4e8b\u306e\u6700\u5f8c\u3092\u898b\u308b\u3053\u3068\u3002 foldr (\\x (ys, zs) -> (x : zs, ys)) ([], []) \u30a8\u30ec\u30ac\u30f3\u30c8\u3067\u3059\u304c\u3001\u5b9f\u306f\u554f\u984c\u3092\u306f\u3089\u3093\u3067\u3044\u3066\u3001\u7121\u9650\u306e\u30ea\u30b9\u30c8\u306b\u5bfe\u3057\u3066\u4f7f\u3046\u3068\u6b62\u307e\u3089\u306a\u304f\u306a\u308a\u307e\u3059\u2026","title":"foldr\u3067\u30bf\u30d7\u30eb\u3092\u6e21\u3059\u5834\u5408\u306e\u6ce8\u610f","image_url":null,"blog_title":"ksmakoto\u306ehatenadiary","categories":[],"author_url":"https://blog.hatena.ne.jp/metanest/","version":"1.0","provider_name":"Hatena Blog","author_name":"metanest","blog_url":"https://ksmakoto.hatenadiary.com/","provider_url":"https://hatena.blog","height":"190","published":"2014-05-22 22:32:23","width":"100%"}