{"height":"190","published":"2021-06-17 18:14:07","categories":["\u6280\u8853\u95a2\u9023","\u6280\u8853\u95a2\u9023 - Rails"],"image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/m/mah666hhh/20210617/20210617181132.jpg","version":"1.0","description":"\u30bf\u30fc\u30df\u30ca\u30eb\u3067 $ gem list xxx \u306e\u3088\u3046\u306b\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001 \u30e1\u30bd\u30c3\u30c9\u3067\u7279\u5b9a\u306egem\u304c\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u6e08\u304b\u30c1\u30a7\u30c3\u30af\u3057\u305f\u3044\u3002 \u30bf\u30fc\u30df\u30ca\u30eb\u3068\u540c\u69d8\u306bgem\u30b3\u30de\u30f3\u30c9\u3092\u4f7f\u3048\u3070OK\u3067\u3059\u3002 gem '\u6307\u5b9a\u306egem\u540d' \u3067\u8abf\u3079\u3089\u308c\u307e\u3059\u3002 \u623b\u308a\u5024\u306f\u3001 \u5f15\u6570\u306egem\u304c\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u6e08\u306a\u3089true\u3092\u8fd4\u3059 \u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u3066\u3044\u306a\u3051\u308c\u3070 Gem::LoadError \u3092raise\u3059\u308b \u3068\u3044\u3063\u305f\u611f\u3058\u3067\u3059\u3002","author_url":"https://blog.hatena.ne.jp/mah666hhh/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fwww.malanka.org%2Fentry%2Fcheck-if-a-particular-gem-is-installed-by-methods\" title=\"\u3010Rails Ruby\u3011\u30e1\u30bd\u30c3\u30c9\u3067\u7279\u5b9a\u306egem\u304c\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u6e08\u304b\u30c1\u30a7\u30c3\u30af\u3059\u308b - \u30b9\u30ea\u98ef\u5c4bMaLanka\u306e\u30d5\u30ea\u30fc\u30a8\u30f3\u30b8\u30cb\u30a2\u306a\u65e5\u3005\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","author_name":"mah666hhh","url":"https://www.malanka.org/entry/check-if-a-particular-gem-is-installed-by-methods","provider_url":"https://hatena.blog","title":"\u3010Rails Ruby\u3011\u30e1\u30bd\u30c3\u30c9\u3067\u7279\u5b9a\u306egem\u304c\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u6e08\u304b\u30c1\u30a7\u30c3\u30af\u3059\u308b","blog_url":"https://www.malanka.org/","blog_title":"\u30b9\u30ea\u98ef\u5c4bMaLanka\u306e\u30d5\u30ea\u30fc\u30a8\u30f3\u30b8\u30cb\u30a2\u306a\u65e5\u3005","width":"100%","provider_name":"Hatena Blog","type":"rich"}