murajun1978 https://blog.hatena.ne.jp/murajun1978/ Murajun's Style https://murajun1978.hatenadiary.com/ Ruby Hashで要素の数を取得してみる Hash#lengthとHash#size favorites_language = { bob: 'Ruby', jone: 'Ruby', tiger: 'Perl' } favorites_language.length #=> 3 favorites_language.size #=> 3 Enumerable#count favorites_language = { bob: 'Ruby', jone: 'Ruby', tiger: 'Perl' } favorites_language.count #=> 3 では、Valueが'Ruby'である要… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fmurajun1978.hatenadiary.com%2Fentry%2F2015%2F02%2F23%2F221552" title="RubyのHashで要素数を取得するヘ(^o^)ノ - Murajun&#39;s Style" 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 2015-02-23 22:15:52 rich https://murajun1978.hatenadiary.com/entry/2015/02/23/221552 1.0 100%