はじめに 毎日Kotlinシリーズです。 このシリーズを初めての方はこちらです。「毎日Kotlin」はじめました | Developers.IO 問題 Lazy property | Try Kotlin Add a custom getter to make the 'lazy' val really lazy. It should be initialized by the invocation of 'initializer()' at the moment of the first access. You can add as many additional properties as you need. Do not use delegated properties! class LazyProperty(val initializer: () -> Int) { val laz