{"title":" Vector \u7528\u30c4\u30fc\u30eb","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fsirocco.hatenadiary.org%2Fentry%2F20121004%2F1349338801\" title=\" Vector \u7528\u30c4\u30fc\u30eb - 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>","url":"https://sirocco.hatenadiary.org/entry/20121004/1349338801","image_url":null,"provider_name":"Hatena Blog","height":"190","blog_title":"sirocco \u306e\u66f8\u3044\u3066\u3082\u3059\u3050\u306b\u5fd8\u308c\u308b\u30e1\u30e2","author_url":"https://blog.hatena.ne.jp/sirocco/","author_name":"sirocco","categories":["Haskell"],"type":"rich","width":"100%","description":"\u30ea\u30b9\u30c8\u306b\u306f\u95a2\u6570\u304c\u591a\u6570\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u3066\u4fbf\u5229\u306a\u306e\u3067\u3059\u3051\u308c\u3069\u3082\u3001\u901f\u5ea6\u306fVector\u306b\u304b\u306a\u3044\u307e\u305b\u3093\u3002 \u305d\u3053\u3067 Vector \u3092\u4fbf\u5229\u306b\u4f7f\u3046\u305f\u3081\u306e\u95a2\u6570\u3092\u4f5c\u3063\u3066\u96c6\u3081\u3066\u3044\u304d\u307e\u3059\u3002 catMaybes \u306e Vector \u30d0\u30fc\u30b8\u30e7\u30f3 catMaybes \u3092\u5404\u8981\u7d20\u304cMaybe\u578b\u306e\u30ea\u30b9\u30c8\u306b\u9069\u7528\u3059\u308b\u3068Nothing \u306e\u8981\u7d20\u306f\u53d6\u308a\u9664\u304b\u308c\u3001Just a \u306f a \u306e\u8981\u7d20\u306e\u307f\u306b\u306a\u308a\u307e\u3059\u3002 import qualified Data.Vector as V (Vector, null, head, cons, empty, tail) vCatMaybes :: V.Vector (Maybe a) -> V.Vector a v\u2026","blog_url":"https://sirocco.hatenadiary.org/","published":"2012-10-04 17:20:01","provider_url":"https://hatena.blog","version":"1.0"}