![]() In this case, the inner function is only available from inside the outer function and can access the local variables of the outer scope. Local functionsįunctions can be defined inside other functions. Constructors Common JVM JS Native 1.0 The root of the Kotlin class hierarchy.Every Kotlin class has Any as a superclass. Or: fun ternary (ifTrue: String, ifFalse: String, test: Boolean): String Any - Kotlin Programming Language Common JVM JS Native Version 1.8 kotlin-stdlib / kotlin / Any Any Common JVM JS Native 1.0 open class Any (Common source) (Native source) The root of the Kotlin class hierarchy. PrintHello() // => writes the string to stdout Since I won't be able to cover everything offered by the language, let's restrict this (first?) Series to Kotlin functions, starting with some cool stuff about them:įor those catching up, a function in Kotlin is declared using the fun parameter, a function name, optional arguments in parenthesis written :, followed by a : and an optional return type. Some of the (many) things I love about it are its functional programming support, its compact syntax, and the advanced yet very handy concepts of extension functions, delegates, and more. The only thing you need is a basic knowledge of Kotlin - I won't explain the 101. ![]() After reading this series, constructs such as the following should not scare you off anymore: fun x (a: ( T) -> R, b: R.() -> S): (T) -> S = public inline fun Iterable.filter( predicate: (T) -> Boolean ).![]() Let's deep dive into Kotlin functions, from the simple theory to the more advanced concepts of extension functions and lambda receivers. Iterable processing, on the other hand, returns a collection like List on every step. ![]()
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