rhysd https://blog.hatena.ne.jp/rhysd/ はやくプログラムになりたい https://rhysd.hatenablog.com/ Ruby class Proc %w[ + - * / ** % | & ^ > < >= <= == <=> >> << =~ != !~ ].map{|i| i.to_sym }.each do |op| define_method(op) do |rhs| apply_binary(rhs,&op) end end private def apply_binary rhs raise "block is needed" unless block_given? Proc.new{|*args| yield self.call(*args),rhs.call(*args) } end end これによ… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Frhysd.hatenablog.com%2Fentry%2F20120505%2F1336171358" title="Proc に2項演算子を定義してみた - はやくプログラムになりたい" 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 2012-05-05 07:42:38 rich https://rhysd.hatenablog.com/entry/20120505/1336171358 1.0 100%