E_Mattsan https://blog.hatena.ne.jp/E_Mattsan/ エンジニアのソフトウェア的愛情 https://blog.emattsan.org/ Lua -- クラスの定義 Point = {} Point.__index = Point; -- ここがミソ、その１ function Point:new(x, y) local new_instance = { x_ = x or 0, y_ = y or 0 } setmetatable(new_instance, self) -- ここがミソ、その２ return new_instance end function Point:__unm() return Point:new(- self.x_, - self.y_) end function Point:__add(other) retu… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fblog.emattsan.org%2Fentry%2F20100104%2F1262605888" title="Luaでオブジェクト指向 - エンジニアのソフトウェア的愛情" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> https://images-fe.ssl-images-amazon.com/images/I/51WgH8SY3hL._SL160_.jpg Hatena Blog https://hatena.blog 2010-01-04 20:51:28 rich https://blog.emattsan.org/entry/20100104/1262605888 1.0 100%