aru_pg https://blog.hatena.ne.jp/aru_pg/ あーるPG - 社会人のデジタル生活 https://rpg.hateblo.jp/ Ruby array1 = [1, 1.3, 2.3, 10] array2 = [1, 2, 3, 4] f = open("hoge.bin", "wb") f.write array1.pack("iffi") #01 00 00 00 66 66 A6 3F 33 33 13 40 0A 00 00 00 f.write array2.pack( "i*") #01 00 00 00 02 00 00 00 03 00 00 00 04 00 00 00 f.write array1.pack( "i*") #01 00 00 00 01 00 00 00 02 00 00 00 0A 00 0… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Frpg.hateblo.jp%2Fentry%2F20060531%2Fp1" title="バイナリ入出力 - あーるPG - 社会人のデジタル生活" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> Hatena Blog https://hatena.blog 2006-05-31 00:00:00 rich https://rpg.hateblo.jp/entry/20060531/p1 1.0 100%