aereal https://blog.hatena.ne.jp/aereal/ 『言葉を吐く』 https://d.aereal.org/ ruby def get_each_const(const, context=::Object) const.to_s.split(/::/).inject(context) {|parent, c| parent.const_get(c) } end module Foo module Bar module Hoge module Fuga end end end end bar = get_each_const "Foo::Bar" # -> Foo::Bar fuga = get_each_const "Hoge::Fuga", bar # -> Foo::Bar::Hoge::Fuga よくある… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fd.aereal.org%2Fentry%2F20091026%2F1256547144" title=" ネストされた定数を取得する - 『言葉を吐く』" 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 2009-10-26 17:52:24 rich https://d.aereal.org/entry/20091026/1256547144 1.0 100%