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

2 votes403 views1 answer
Btn start activity kotlin
Kotlin
1 vote383 views2 answers
Glide vs picasso
Kotlin
0 vote391 views1 answer
Kotlin labels
Kotlin
2 votes380 views1 answer
Arraylist vs mutablelist kotlin
Kotlin
0 vote382 views1 answer
Kotlin static field
Kotlin
2 votes375 views2 answers
Kotlin throw exception
Kotlin
0 vote378 views1 answer
Custom listview in android kotlin with baseadapter with clicklistener
Kotlin
1 vote345 views2 answers
Kotlin corountine dependency
Kotlin
1 vote385 views1 answer
Kotlin when greater than
Kotlin
2 votes401 views1 answer
Kotlin network change listener android
Kotlin