sirocco https://blog.hatena.ne.jp/sirocco/ sirocco の書いてもすぐに忘れるメモ https://sirocco.hatenadiary.org/ Haskell data Person = Person { name :: String, age :: Int} instance Eq Person where (Person name1 age1) == (Person name2 age2) = (name1 == name2) && (age1 == age2) instance Show Person where show (Person name age) = "Person name=" ++ name ++ " age="++(show age) Prelude> :load person.hs [1 of 1] Compiling Ma… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fsirocco.hatenadiary.org%2Fentry%2F20090617%2F1245246932" title="構造体のような型を定義してみる - sirocco の書いてもすぐに忘れるメモ" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> Hatena Blog https://hatena.blog 2009-06-17 22:55:32 rich https://sirocco.hatenadiary.org/entry/20090617/1245246932 1.0 100%