{"width":"100%","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fwai-doi.hatenablog.com%2Fentry%2Freplace-key\" title=\"Ruby 3.0 \u3067 Hash \u306e\u30ad\u30fc\u3092\u5225\u306e\u30ad\u30fc\u306b\u7f6e\u63db\u3059\u308b\u65b9\u6cd5 - \u3069\u3044\u30d6\u30ed\u30b0\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","title":"Ruby 3.0 \u3067 Hash \u306e\u30ad\u30fc\u3092\u5225\u306e\u30ad\u30fc\u306b\u7f6e\u63db\u3059\u308b\u65b9\u6cd5","provider_url":"https://hatena.blog","blog_title":"\u3069\u3044\u30d6\u30ed\u30b0","categories":["Ruby"],"type":"rich","published":"2020-12-17 19:34:48","height":"190","image_url":null,"provider_name":"Hatena Blog","author_url":"https://blog.hatena.ne.jp/wai-doi/","author_name":"wai-doi","blog_url":"https://wai-doi.hatenablog.com/","version":"1.0","description":"\u4f8b\u3048\u3070 {foo: 1, bar: 2, baz: 3} \u3068\u3044\u3046 Hash \u306e\u30ad\u30fc\u306e\u3046\u3061\u3001 :baz \u3092 :foobar \u306b\u7f6e\u63db\u3057\u3066 {foo: 1, bar: 2, foobar: 3} \u306b\u3057\u305f\u3044\u3068\u3057\u307e\u3059\u3002 Ruby 2.7 \u4ee5\u524d\u306e\u5834\u5408 Ruby 2.7 \u4ee5\u524d\u3060\u3068 Hash#transform_keys \u306e\u30d6\u30ed\u30c3\u30af\u306e\u4e2d\u3067\u6761\u4ef6\u5206\u5c90\u3055\u305b\u305f\u308a\u3068\u5c11\u3057\u9762\u5012\u3067\u3059\u3002 # 2.7.2 hash = {foo: 1, bar: 2, baz: 3} hash.transform_keys { |key| key == :baz ? :foobar : key } #=> {:foo=>1, :bar=>2, \u2026","url":"https://wai-doi.hatenablog.com/entry/replace-key"}