{"author_name":"kubo39","title":"Crystal\u3067\u30af\u30ed\u30fc\u30b8\u30e3\u3092\u547c\u3076","url":"https://kubo39.hatenablog.com/entry/2015/09/08/004251","categories":["crystal"],"blog_url":"https://kubo39.hatenablog.com/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fkubo39.hatenablog.com%2Fentry%2F2015%2F09%2F08%2F004251\" title=\"Crystal\u3067\u30af\u30ed\u30fc\u30b8\u30e3\u3092\u547c\u3076 - kubo39&#39;s blog\" 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%","author_url":"https://blog.hatena.ne.jp/kubo39/","provider_url":"https://hatena.blog","published":"2015-09-08 00:42:51","image_url":null,"type":"rich","version":"1.0","provider_name":"Hatena Blog","blog_title":"kubo39's blog","description":"Crystal\u306eProc\u306f\u95a2\u6570\u30dd\u30a4\u30f3\u30bf\u3068\u30af\u30ed\u30fc\u30b8\u30e3\u306b\u5bfe\u3059\u308b\u53c2\u7167\u306e\u7d44\u306b\u306a\u3063\u3066\u3044\u308b\u3002 \u30af\u30ed\u30fc\u30b8\u30e3\u3078\u306e\u53c2\u7167\u306fCallable\u306a\u306e\u3067\u3001 def closure(x : ( -> Nil)) fp = pointerof(x) p \"fp: #{fp}\" # pointer to function clsr = fp + sizeof(Pointer(Int8)) # See Internal p \"closure: #{clsr}\" # pointer to closure p \"closure.value: #{clsr.value}\" # inside of closure p fp.class \u2026","height":"190"}