Kotlin中的交换功能 [英] Swap Function in Kotlin

问题描述

除了解决方案

完全不需要Kotlin中的交换功能.您可以使用现有的还函数，例如:

var a = 1
var b = 2

a = b.also { b = a }

println(a) // print 2
println(b) // print 1

is there any better way to write generic swap function in kotlin other than java way described in How to write a basic swap function in Java.

Is there any kotlin language feature which can make generic swap function more concise and intuitive?

解决方案

No need a swap function in Kotlin at all. you can use the existing also function, for example:

var a = 1
var b = 2

a = b.also { b = a }

println(a) // print 2
println(b) // print 1

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