{"blog_title":"sirocco \u306e\u66f8\u3044\u3066\u3082\u3059\u3050\u306b\u5fd8\u308c\u308b\u30e1\u30e2","provider_url":"https://hatena.blog","published":"2010-12-01 12:06:52","author_url":"https://blog.hatena.ne.jp/sirocco/","blog_url":"https://sirocco.hatenadiary.org/","provider_name":"Hatena Blog","description":"nagate \u306f Num \u578b\u306e\u5f15\u6570\u3092\u3072\u3068\u3064\u3068\u308a\u7b26\u53f7\u3092\u53cd\u8ee2\u3055\u305b\u3066\u8fd4\u3059\u95a2\u6570\u3002 > :t negate negate :: (Num a) => a -> a > :i negate class (Eq a, Show a) => Num a where ... negate :: a -> a ... -- Defined in GHC.Num > negate 1 --=> -1 > negate $ negate 1 --=> 1 > negate $ negate $ negate 1 --=> -1 (-) \u306f\u6700\u521d\u306e\u5f15\u6570\u304b\u3089\u4e8c\u756a\u76ee\u306e\u5f15\u6570\u3092\u5f15\u3044\u305f\u5024\u3092\u8fd4\u3059\u95a2\u6570 > :t (-) (-) :: \u2026","author_name":"sirocco","version":"1.0","height":"190","url":"https://sirocco.hatenadiary.org/entry/20101201/1291172812","type":"rich","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fsirocco.hatenadiary.org%2Fentry%2F20101201%2F1291172812\" title=\"negate (-)  - \u306e\u9055\u3044\u306f\u30fb\u30fb\u30fb\uff1f - 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>","width":"100%","categories":["Haskell"],"title":"negate (-)  - \u306e\u9055\u3044\u306f\u30fb\u30fb\u30fb\uff1f","image_url":null}