If you convert an app from Java to Kotlin, will it take longer to compile? 来源： Kotlin vs Java: Compilation speed – Keepsafe Engineering – Medium

Have you ever wondered if listeners with several functions in Kotlin can be reduced to something nicer? Here I give you a good amount of alternatives. 来源： Listeners with sever…

其中的inline比较好理解，就是在编译时把调用这个函数进行替换，而noinline依据字面意思也比较好理解。但这个inline与noinline结合又有一个非局部返回（Non-local returns）出现。且看下图中的官方解释crossinline 的作用是让被标记的lambda表达式不允许非局部返回。首先，默认内联函数的lambda表达式参…

object expressions are executed (and initialized) immediately, where they are used; object declarations are initialized lazily, when accessed for the first time; a companion o…

Chapter 4 Interfaces in Kotlin are similar to Java’s but can contain default implementations and properties. All declarations are final and public by defau…