ruby-U https://blog.hatena.ne.jp/ruby-U/ rubyu's blog https://rubyu.hatenablog.com/ python cgi モジュロ演算は便利だが from timeit import Timer ins = 'ins' def through(): return ins def modulo1(): return """%s""" % ins def modulo2(): return """%s0123456789""" % ins def modulo3(): return """0123456789%s""" % ins print Timer('through()', 'from __main__ import through').timeit(100000) print Timer('modulo1()… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Frubyu.hatenablog.com%2Fentry%2F20090203%2F1233675880" title="文字列の挿入を多用する場合のパフォーマンスについて - rubyu&#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> Hatena Blog https://hatena.blog 2009-02-03 00:44:40 rich https://rubyu.hatenablog.com/entry/20090203/1233675880 1.0 100%