{"width":"100%","version":"1.0","author_name":"ku-ma-me","blog_title":"\u307e\u3081\u3081\u3082","categories":["Ruby"],"provider_name":"Hatena Blog","blog_url":"https://mametter.hatenablog.com/","url":"https://mametter.hatenablog.com/entry/20090308/p3","image_url":null,"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fmametter.hatenablog.com%2Fentry%2F20090308%2Fp3\" title=\" double return - \u307e\u3081\u3081\u3082\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","description":"ref:http://www.kmonos.net/wlog/95.html#_1109090307 \u3092\u898b\u3066\u3044\u3066\u3001\u5168\u7136\u95a2\u4fc2\u306a\u3044\u3051\u3069\u524d\u3061\u3087\u3063\u3068\u8003\u3048\u305f\u304f\u3060\u3089\u306a\u3044\u3053\u3068\u3092\u601d\u3044\u51fa\u3057\u307e\u3057\u305f\u3002 \u3057\u3070\u3057\u3070 return \u3092\u81ea\u5206\u3067\u5b9a\u7fa9\u3057\u305f\u304f\u306a\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u6700\u521d\u306b\u5f15\u6570\u3092\u691c\u67fb\u3057\u3066\u3001\u3060\u3081\u3060\u3063\u305f\u3089 return \u3059\u308b\u3068\u304d\u3002 # \u5f15\u6570\u3092\u691c\u67fb\u3059\u308b\u30e1\u30bd\u30c3\u30c9 def check(*args) # \u691c\u67fb return bool # true or false end def foo(*args) return unless check(*args) # \u691c\u67fb # \u30e1\u30a4\u30f3\u51e6\u7406 end \u3068\u3044\u3046\u3088\u3046\u306b\u3001\u5f15\u6570\u691c\u67fb\u3059\u308b\u5168\u30e1\u30bd\u30c3\u2026","provider_url":"https://hatena.blog","type":"rich","title":" double return","height":"190","published":"2009-03-08 00:00:02","author_url":"https://blog.hatena.ne.jp/ku-ma-me/"}