Kotlin extension

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.
}

Kotlin extension

To declare an extension function, prefix its name with a receiver 
type, which refers to the type being extended. The following adds a 
swap function to MutableList<Int>:

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 votes266 views1 answer
Console writeline kotlin
Kotlin
0 vote259 views1 answer
Link to image view kotlin
Kotlin
0 vote240 views1 answer
Var and val in kotlin
Kotlin
3 votes276 views1 answer
Kotlin convert string to char array
Kotlin
0 vote337 views1 answer
How to get time duration from file kotlin
Kotlin
1 vote257 views2 answers
Kotlin apply
Kotlin
0 vote289 views1 answer
Kotlin string remove last 3 digits
Kotlin
0 vote287 views1 answer
Kotlin for i in range how to get index value of i
Kotlin
1 vote276 views1 answer
Object kotlin
Kotlin
1 vote274 views1 answer
How to reverse array in kotlin
Kotlin