tanakaBox https://blog.hatena.ne.jp/tanakaBox/ ボクノス https://boxnos.hatenablog.com/ Ruby 文字列演算でハマる。 irb(main):017:0> 5.times { |i| irb(main):018:1* print i + " times\n" irb(main):019:1> } TypeError: String can't be coerced into Fixnum from (irb):18:in `+' from (irb):18 from (irb):17:in `times' from (irb):17自動変換されないのね・・・不親切・・・i.to_sしないとダメ。 for文 irb(main):052:0> sum = 0 => 0 irb(main):053… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fboxnos.hatenablog.com%2Fentry%2F20070428%2F1177739691" title=" たのしいRuby 第6章 繰り返し - ボクノス" 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 2007-04-28 14:54:51 rich https://boxnos.hatenablog.com/entry/20070428/1177739691 1.0 100%