all
@ExperimentalUnsignedTypes inline fun ULongArray.all(
predicate: (ULong) -> Boolean
): Boolean
(source)
@ExperimentalUnsignedTypes inline fun UByteArray.all(
predicate: (UByte) -> Boolean
): Boolean
(source)
@ExperimentalUnsignedTypes inline fun UShortArray.all(
predicate: (UShort) -> Boolean
): Boolean
(source)
Returns true
if all elements match the given predicate.
Note that if the array contains no elements, the function returns true
because there are no elements in it that do not match the predicate.
See a more detailed explanation of this logic concept in "Vacuous truth" article.
import kotlin.test.*
fun main(args: Array<String>) {
//sampleStart
val isEven: (Int) -> Boolean = { it % 2 == 0 }
val zeroToTen = 0..10
println("zeroToTen.all { isEven(it) } is ${zeroToTen.all { isEven(it) }}") // false
println("zeroToTen.all(isEven) is ${zeroToTen.all(isEven)}") // false
val evens = zeroToTen.map { it * 2 }
println("evens.all { isEven(it) } is ${evens.all { isEven(it) }}") // true
val emptyList = emptyList<Int>()
println("emptyList.all { false } is ${emptyList.all { false }}") // true
//sampleEnd
}
Returns true
if all elements match the given predicate.
Note that if the collection contains no elements, the function returns true
because there are no elements in it that do not match the predicate.
See a more detailed explanation of this logic concept in "Vacuous truth" article.
import kotlin.test.*
fun main(args: Array<String>) {
//sampleStart
val isEven: (Int) -> Boolean = { it % 2 == 0 }
val zeroToTen = 0..10
println("zeroToTen.all { isEven(it) } is ${zeroToTen.all { isEven(it) }}") // false
println("zeroToTen.all(isEven) is ${zeroToTen.all(isEven)}") // false
val evens = zeroToTen.map { it * 2 }
println("evens.all { isEven(it) } is ${evens.all { isEven(it) }}") // true
val emptyList = emptyList<Int>()
println("emptyList.all { false } is ${emptyList.all { false }}") // true
//sampleEnd
}
Returns true
if all entries match the given predicate.
Note that if the map contains no entries, the function returns true
because there are no entries in it that do not match the predicate.
See a more detailed explanation of this logic concept in "Vacuous truth" article.
import kotlin.test.*
fun main(args: Array<String>) {
//sampleStart
val isEven: (Int) -> Boolean = { it % 2 == 0 }
val zeroToTen = 0..10
println("zeroToTen.all { isEven(it) } is ${zeroToTen.all { isEven(it) }}") // false
println("zeroToTen.all(isEven) is ${zeroToTen.all(isEven)}") // false
val evens = zeroToTen.map { it * 2 }
println("evens.all { isEven(it) } is ${evens.all { isEven(it) }}") // true
val emptyList = emptyList<Int>()
println("emptyList.all { false } is ${emptyList.all { false }}") // true
//sampleEnd
}