filterIndexedTo
inline
fun
<
T
,
C
:
MutableCollection
<
in
T
>
>
Sequence
<
T
>
.
filterIndexedTo
(
destination
:
C
,
predicate
:
(
index
:
Int
,
T
)
->
Boolean
)
:
C
(source)
Appends all elements matching the given predicate to the given destination .
import kotlin.test.*
fun main(args: Array<String>) {
//sampleStart
val numbers: List<Int> = listOf(0, 1, 2, 3, 4, 8, 6)
val numbersOnSameIndexAsValue = mutableListOf<Int>()
println(numbersOnSameIndexAsValue) // []
numbers.filterIndexedTo(numbersOnSameIndexAsValue) { index, i -> index == i }
println(numbersOnSameIndexAsValue) // [0, 1, 2, 3, 4, 6]
//sampleEnd
}
Parameters
function that takes the index of an element and the element itself and returns the result of predicate evaluation on the element.
The operation is terminal .