{"description":"\u3053\u3046\u3044\u3046\u306e\u306f\u3060\u3081\u304b *Main> let f ~st@(x:xs) = st *Main> f [] *** Exception: :1:4-20: Irrefutable pattern failed for pattern (st@(x : xs)) \u6a2a\u7740\u3059\u308b\u306a\u3068\u3044\u3046\u3053\u3068\u304b\u3002","provider_name":"Hatena Blog","width":"100%","provider_url":"https://hatena.blog","url":"https://anekos.hatenablog.com/entry/20070613/1181674158","title":"\u9045\u5ef6\u30d1\u30bf\u30fc\u30f3","height":"190","version":"1.0","blog_url":"https://anekos.hatenablog.com/","published":"2007-06-13 03:49:18","blog_title":"\u5730\u7344\u306e\u30cd\u30b3\u30d6\u30ed\u30b0","categories":["Haskell"],"author_name":"nokturnalmortum","image_url":null,"author_url":"https://blog.hatena.ne.jp/nokturnalmortum/","type":"rich","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fanekos.hatenablog.com%2Fentry%2F20070613%2F1181674158\" title=\"\u9045\u5ef6\u30d1\u30bf\u30fc\u30f3 - \u5730\u7344\u306e\u30cd\u30b3\u30d6\u30ed\u30b0\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>"}