{"version":"1.0","provider_url":"https://hatena.blog","url":"https://sirocco.hatenadiary.org/entry/20111030/1319922234","author_url":"https://blog.hatena.ne.jp/sirocco/","type":"rich","author_name":"sirocco","blog_url":"https://sirocco.hatenadiary.org/","categories":["Haskell","scheme"],"width":"100%","blog_title":"sirocco \u306e\u66f8\u3044\u3066\u3082\u3059\u3050\u306b\u5fd8\u308c\u308b\u30e1\u30e2","description":"Env \u306e\u5185\u5bb9\u304c\u8868\u793a\u51fa\u6765\u308b\u3088\u3046\u306b\u306a\u3063\u305f\u3068\u3053\u308d\u3067\u3001 defineVar\u3092\u52d5\u304b\u3057\u3066\u307f\u305f\u3044\u306e\u3067\u3059\u304c Show \u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u304c\u306a\u3044\u306e\u3067\u8868\u793a\u3067\u304d\u307e\u305b\u3093\u3002 > env <- nullEnv > showEnv env -- > [] > defineVar env \"y\" (Number 9) <interactive>:1:0: No instance for (Show (IOThrowsError LispVal)) arising from a use of `print' at <interactive>:1:0-27 Possible fix: add an instance declarat\u2026","height":"190","image_url":null,"published":"2011-10-30 06:03:54","provider_name":"Hatena Blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fsirocco.hatenadiary.org%2Fentry%2F20111030%2F1319922234\" title=\"\u300cWrite Yourself a Scheme in 48 Hours\u300d \u3092\u5199\u7d4c\u3057\u3066\u307f\u308b(12) : \u300c\u30a8\u30e9\u30fc\u30c1\u30a7\u30c3\u30af\u3068\u4f8b\u5916\u300d\u3092\u3082\u3063\u3068 - sirocco \u306e\u66f8\u3044\u3066\u3082\u3059\u3050\u306b\u5fd8\u308c\u308b\u30e1\u30e2\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","title":"\u300cWrite Yourself a Scheme in 48 Hours\u300d \u3092\u5199\u7d4c\u3057\u3066\u307f\u308b(12) : \u300c\u30a8\u30e9\u30fc\u30c1\u30a7\u30c3\u30af\u3068\u4f8b\u5916\u300d\u3092\u3082\u3063\u3068"}