Extension function kotlin

Kotlin extension function

fun Int.increment(): Int {
    return this+1
}
fun Boolean.invert(): Boolean {
    return xor(true) // a xor true = !a, by the conditional inversion property of xor.
}

Extension function kotlin

Kotlin provides the ability to extend a class with new functionality without 
having to inherit from the class or use design patterns such as Decorator. 
This is done via special declarations called extensions.

fun MutableList<Int>.swap(index1: Int, index2: Int) {
    val tmp = this[index1] // 'this' corresponds to the list
    this[index1] = this[index2]
    this[index2] = tmp
}

Similar codes

1 vote235 views1 answer
Kotlin arrow function
Kotlin
1 vote202 views1 answer
Kotlin class
Kotlin
1 vote195 views1 answer
Nullpointerexception kotlin
Kotlin
-5 votes255 views2 answers
How to make a delay in android kotlin
Kotlin
2 votes220 views2 answers
Kotlin remove duplicates from list
Kotlin
0 vote193 views1 answer
Object vs companion object kotlin
Kotlin
0 vote174 views1 answer
Viewpager2 android dependency
Kotlin
1 vote206 views1 answer
Kotlin get last line of string
Kotlin
11 votes427 views3 answers
What is logging in programming
Kotlin
1 vote210 views1 answer
Android studio kotlin
Kotlin