filterNot

Common
JVM
JS
Native
1.0
inline fun < T > Array < out T > . filterNot (
predicate : ( T ) -> Boolean
) : List < T >

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inline fun ByteArray . filterNot (
predicate : ( Byte ) -> Boolean
) : List < Byte >

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inline fun ShortArray . filterNot (
predicate : ( Short ) -> Boolean
) : List < Short >

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inline fun IntArray . filterNot (
predicate : ( Int ) -> Boolean
) : List < Int >

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inline fun LongArray . filterNot (
predicate : ( Long ) -> Boolean
) : List < Long >

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inline fun FloatArray . filterNot (
predicate : ( Float ) -> Boolean
) : List < Float >

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inline fun DoubleArray . filterNot (
predicate : ( Double ) -> Boolean
) : List < Double >

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inline fun BooleanArray . filterNot (
predicate : ( Boolean ) -> Boolean
) : List < Boolean >

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inline fun CharArray . filterNot (
predicate : ( Char ) -> Boolean
) : List < Char >

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inline fun < T > Iterable < T > . filterNot (
predicate : ( T ) -> Boolean
) : List < T >

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@ExperimentalUnsignedTypes inline fun UIntArray . filterNot (
predicate : ( UInt ) -> Boolean
) : List < UInt >

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@ExperimentalUnsignedTypes inline fun ULongArray . filterNot (
predicate : ( ULong ) -> Boolean
) : List < ULong >

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@ExperimentalUnsignedTypes inline fun UByteArray . filterNot (
predicate : ( UByte ) -> Boolean
) : List < UByte >

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@ExperimentalUnsignedTypes inline fun UShortArray . filterNot (
predicate : ( UShort ) -> Boolean
) : List < UShort >

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Returns a list containing all elements not matching the given predicate .

import kotlin.test.*

fun main(args: Array<String>) {
//sampleStart
val numbers: List<Int> = listOf(1, 2, 3, 4, 5, 6, 7)
val evenNumbers = numbers.filter { it % 2 == 0 }
val notMultiplesOf3 = numbers.filterNot { number -> number % 3 == 0 }

println(evenNumbers) // [2, 4, 6]
println(notMultiplesOf3) // [1, 2, 4, 5, 7]
//sampleEnd
}
Common
JVM
JS
Native
1.0
inline fun < K , V > Map < out K , V > . filterNot (
predicate : ( Entry < K , V > ) -> Boolean
) : Map < K , V >

(source)

Returns a new map containing all key-value pairs not matching the given predicate .

The returned map preserves the entry iteration order of the original map.

import kotlin.test.*
import java.util.*

fun main(args: Array<String>) {
//sampleStart
val originalMap = mapOf("key1" to 1, "key2" to 2, "key3" to 3)

val filteredMap = originalMap.filterNot { it.value < 3 }
println(filteredMap) // {key3=3}
// original map has not changed
println(originalMap) // {key1=1, key2=2, key3=3}

val matchAllPredicate: ((Map.Entry<String, Int>)) -> Boolean = { it.value > 0 }
val emptyMap = originalMap.filterNot(matchAllPredicate)
println(emptyMap) // {}
//sampleEnd
}