ledsun https://blog.hatena.ne.jp/ledsun/ @ledsun blog https://ledsun.hatenablog.com/ 技 Ruby fizzbuzz = -> x { x % 15 == 0 ? 'FizzBuzz' : x % 5 == 0 ? 'Buzz' : x % 3 == 0 ? 'Fizz' : x } p_fizzbuzz = -> x { p x } << fizzbuzz 1.upto(15){ | n | p_fizzbuzz.call(n) } pと合成するだけでは面白くないですね。 fizz = -> x { (x.is_a? Integer) && x % 3 == 0 ? 'Fizz' : x } buzz = -> x { (x.is_a? Integer) && x % 5 == 0 ? '… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fledsun.hatenablog.com%2Fentry%2F2018%2F12%2F26%2F225457" title="Ruby2.6 に関数合成オペレータが追加されたのでFizzBuzzで遊ぶ - @ledsun blog" 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 2018-12-26 22:54:57 rich https://ledsun.hatenablog.com/entry/2018/12/26/225457 1.0 100%