filterIndexedTo

Common
JVM
JS
Native
1.0
inline fun < T , C : MutableCollection < in T > > Array < out T > . filterIndexedTo (
destination : C ,
predicate : ( index : Int , T ) -> Boolean
) : C

(source)
inline fun < C : MutableCollection < in Byte > > ByteArray . filterIndexedTo (
destination : C ,
predicate : ( index : Int , Byte ) -> Boolean
) : C

(source)
inline fun < C : MutableCollection < in Short > > ShortArray . filterIndexedTo (
destination : C ,
predicate : ( index : Int , Short ) -> Boolean
) : C

(source)
inline fun < C : MutableCollection < in Int > > IntArray . filterIndexedTo (
destination : C ,
predicate : ( index : Int , Int ) -> Boolean
) : C

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inline fun < C : MutableCollection < in Long > > LongArray . filterIndexedTo (
destination : C ,
predicate : ( index : Int , Long ) -> Boolean
) : C

(source)
inline fun < C : MutableCollection < in Float > > FloatArray . filterIndexedTo (
destination : C ,
predicate : ( index : Int , Float ) -> Boolean
) : C

(source)
inline fun < C : MutableCollection < in Double > > DoubleArray . filterIndexedTo (
destination : C ,
predicate : ( index : Int , Double ) -> Boolean
) : C

(source)
inline fun < C : MutableCollection < in Boolean > > BooleanArray . filterIndexedTo (
destination : C ,
predicate : ( index : Int , Boolean ) -> Boolean
) : C

(source)
inline fun < C : MutableCollection < in Char > > CharArray . filterIndexedTo (
destination : C ,
predicate : ( index : Int , Char ) -> Boolean
) : C

(source)
inline fun < T , C : MutableCollection < in T > > Iterable < T > . filterIndexedTo (
destination : C ,
predicate : ( index : Int , T ) -> Boolean
) : C

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@ExperimentalUnsignedTypes inline fun < C : MutableCollection < in UInt > > UIntArray . filterIndexedTo (
destination : C ,
predicate : ( index : Int , UInt ) -> Boolean
) : C

(source)
@ExperimentalUnsignedTypes inline fun < C : MutableCollection < in ULong > > ULongArray . filterIndexedTo (
destination : C ,
predicate : ( index : Int , ULong ) -> Boolean
) : C

(source)
@ExperimentalUnsignedTypes inline fun < C : MutableCollection < in UByte > > UByteArray . filterIndexedTo (
destination : C ,
predicate : ( index : Int , UByte ) -> Boolean
) : C

(source)
@ExperimentalUnsignedTypes inline fun < C : MutableCollection < in UShort > > UShortArray . filterIndexedTo (
destination : C ,
predicate : ( index : Int , UShort ) -> 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

predicate - function that takes the index of an element and the element itself and returns the result of predicate evaluation on the element.