{"provider_name":"Hatena Blog","author_name":"bamch0h","url":"https://bamch0h.hatenablog.com/entry/2022/12/26/030843","height":"190","image_url":null,"description":"memo.sugyan.com \u3053\u306e\u30d6\u30ed\u30b0\u3092\u898b\u3066\u3001rb_enc_prev_char \u306e\u52d5\u304d\u304c\u6c17\u306b\u306a\u3063\u305f\u3002 \u307e\u305a\u3001 String#rindex \u304c\u307b\u3093\u3068\u306b HAVE_MEMRCHR \u304c\u306a\u3044\u304b\u3089\u304b\u3069\u3046\u304b\u3092\u691c\u8a3c\u3002 linux \u3067 ruby \u3092\u30b3\u30fc\u30c9\u304b\u3089\u30d3\u30eb\u30c9\u3002 $ git clone https://github.com/ruby/ruby $ cd ruby $ autoconf $ ./configure $ make $ ruby -e 'p \"\\x00\\x01\\x80\\x00\".rindex(\"\\x01\")' linux \u3067\u306f 1 \u306b\u306a\u308b\u3002\u3057\u304b\u3057\u3001string.c \u306e str_rindex(\u2026","blog_url":"https://bamch0h.hatenablog.com/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fbamch0h.hatenablog.com%2Fentry%2F2022%2F12%2F26%2F030843\" title=\"rb_enc_prev_char \u306e\u52d5\u304d - bamchoh\u2019s diary\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_title":"bamchoh\u2019s diary","provider_url":"https://hatena.blog","type":"rich","version":"1.0","published":"2022-12-26 03:08:43","title":"rb_enc_prev_char \u306e\u52d5\u304d","author_url":"https://blog.hatena.ne.jp/bamch0h/","width":"100%","categories":[]}