{"title":"Maybe Java \u308a\u305f\u30fc\u3093\u305a \u301c Java \u3067 Maybe \u3092\u66f8\u3044\u3066\u307f\u305f","published":"2009-10-30 01:11:39","provider_url":"https://hatena.blog","author_url":"https://blog.hatena.ne.jp/SiroKuro/","author_name":"SiroKuro","url":"https://sirokuro-2.hatenadiary.org/entry/20091030/1256919099","blog_url":"https://sirokuro-2.hatenadiary.org/","categories":["java"],"height":"190","description":"\u30e2\u30ca\u30c9\u5247\u3092\u6e80\u305f\u3059\u3082\u306e\u304c\u3084\u3063\u3068\u3067\u304d\u305f\u3002 \u5b9a\u7fa9 interface Function<T, R> { public R eval(T arg); } abstract class Monad<T, M> { public abstract <R extends M> R bind(Function<T, R> func); } abstract class Maybe<T> extends Monad<T, Maybe<?>> { public static <T> Maybe<T> unit(T value) { return new Just<T>(value); } } class Just\u2026","provider_name":"Hatena Blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fsirokuro-2.hatenadiary.org%2Fentry%2F20091030%2F1256919099\" title=\"Maybe Java \u308a\u305f\u30fc\u3093\u305a \u301c Java \u3067 Maybe \u3092\u66f8\u3044\u3066\u307f\u305f - SiroKuro Page\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_title":"SiroKuro Page","image_url":null,"type":"rich","width":"100%","version":"1.0"}