{"title":"Parsec \u3092\u4f7f\u3063\u305f\u8a08\u7b97\u6a5f","author_url":"https://blog.hatena.ne.jp/sirocco/","image_url":null,"blog_title":"sirocco \u306e\u66f8\u3044\u3066\u3082\u3059\u3050\u306b\u5fd8\u308c\u308b\u30e1\u30e2","url":"https://sirocco.hatenadiary.org/entry/20111111/1321000696","provider_name":"Hatena Blog","type":"rich","description":"Parsec \u3092\u4f7f\u3063\u305f\u8a08\u7b97\u6a5f\u3002 import Text.ParserCombinators.Parsec import Control.Applicative hiding ((<|>)) expr :: Parser Int expr = tok(term) >>= (\\t -> ((symbol \"+\") >> expr >>= (\\e -> return (t + e ))) <|> ((symbol \"-\") >> expr >>= (\\m -> return (t-m))) <|> return t) term :: Parser Int term = power >>= (\\p -\u2026","blog_url":"https://sirocco.hatenadiary.org/","height":"190","width":"100%","categories":[],"provider_url":"https://hatena.blog","published":"2011-11-11 17:38:16","version":"1.0","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fsirocco.hatenadiary.org%2Fentry%2F20111111%2F1321000696\" title=\"Parsec \u3092\u4f7f\u3063\u305f\u8a08\u7b97\u6a5f - 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>","author_name":"sirocco"}