{"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fkazu-yamamoto.hatenablog.jp%2Fentry%2F20091208%2F1260249969\" title=\"GHC \u306f\u518d\u5e30\u3092\u672b\u5c3e\u518d\u5e30\u306b\u6700\u9069\u5316\u3059\u308b\u304b\uff1f - \u3042\u3069\u3051\u306a\u3044\u8a71\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","categories":["Haskell"],"title":"GHC \u306f\u518d\u5e30\u3092\u672b\u5c3e\u518d\u5e30\u306b\u6700\u9069\u5316\u3059\u308b\u304b\uff1f","blog_title":"\u3042\u3069\u3051\u306a\u3044\u8a71","width":"100%","height":"190","provider_name":"Hatena Blog","description":"GHC \u306b -ddump-simpl \u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u6e21\u3059\u3068\u3001Core \u5f62\u5f0f\uff08\u4e2d\u9593\u8868\u73fe\u306e\u95a2\u6570\u578b\u8a00\u8a9e\uff09\u3092\u51fa\u529b\u3059\u308b\u3068\u3044\u3046\u306e\u3067\u3001Performance/Accumulating parameter\u306e\u30b3\u30fc\u30c9\u306b\u5bfe\u3057\u3066 Core \u3092\u51fa\u529b\u3057\u307f\u305f\u3002 len \u672b\u5c3e\u518d\u5e30\u3067\u306a\u3044 len \u306e\u30b3\u30fc\u30c9\u306f\u3053\u3046\u3002 len :: [a] -> Int len [] = 0 len (x:xs) = len xs + 1 \u3053\u308c\u306b\u5bfe\u3057\u3066\u3001Core \u3092\u51fa\u529b\u3055\u305b\u308b\u3068\u3053\u3046\u3002\u660e\u3089\u304b\u306b\u672b\u5c3e\u518d\u5e30\u306b\u306f\u76f4\u3055\u308c\u3066\u306a\u3044\u3002 len_rfB = \\ (@ a_afQ) (ds_dyA :: [a_afQ]) -> case ds_dyA of wild_B1\u2026","type":"rich","author_url":"https://blog.hatena.ne.jp/kazu-yamamoto/","author_name":"kazu-yamamoto","provider_url":"https://hatena.blog","blog_url":"https://kazu-yamamoto.hatenablog.jp/","published":"2009-12-08 14:26:09","version":"1.0","image_url":null,"url":"https://kazu-yamamoto.hatenablog.jp/entry/20091208/1260249969"}