ohbarye https://blog.hatena.ne.jp/ohbarye/ valid,invalid https://ohbarye.hatenablog.jp/ Ruby ohbarye Advent Calendar 2020 emoji emoji から codepoints に変換 "👍".unpack("U*") => [128077] "👍".codepoints => [128077] # Convert to hexadecimal "👍".each_codepoint.map {|n| n.to_s(16) } => ["1f44d"] codepoints から emoji に変換 [128077].pack("U*") => "👍" 0x1f44d.chr('UTF-8') => "👍" "\u{1f44d}" => "👍" 環境 Ruby 3.0.0 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fohbarye.hatenablog.jp%2Fentry%2F2021%2F01%2F10%2Femoji-codepoints-conversion" title="Rubyでemojiとcodepointsの変換 - valid,invalid" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> https://avatars3.githubusercontent.com/u/1811616 Hatena Blog https://hatena.blog 2021-01-10 17:41:55 rich https://ohbarye.hatenablog.jp/entry/2021/01/10/emoji-codepoints-conversion 1.0 100%