Rubyistを誘ã†Scalaã®ä¸–ç•Œ17. Rubyã«ã¯Module〠Scalaã«ã¯TraitãŒã‚ã‚‹ trait HelloModule { def hello = "Hello!" } trait WorldModule { def world = "World!" } class Hoge extends HelloModule with WorldModule val hoge = new Hoge() hoge.hello // => "Hello!" Traitを定義 Traitã‚’Mix-In 19. 暗黙クラスを使ㆠimplicit class MyString(val s: String) extends AnyVal { def addScala = s + "Scala" } "Ruby is like ".addScala // => "Ruby is like Scala" æ‹¡å¼µã—ãŸã„型を指定 im
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