kotlin-stdlib/kotlin.concurrent.atomics/fetchAndDecrementAt

fetchAndDecrementAt

@ExperimentalAtomicApi
fun AtomicIntArray.fetchAndDecrementAt(index: Int): Int(source)

Atomically decrements the element of this AtomicIntArray at the given index by one and returns the old value of the element.

Since Kotlin

2.1

Throws

if the index is out of bounds of this array.

Samples

import kotlin.concurrent.atomics.*
import kotlin.concurrent.atomics.AtomicArray
import kotlin.test.assertFailsWith

fun main() { 
   //sampleStart 
   val a = AtomicIntArray(intArrayOf(1, 2, 3))
println(a.fetchAndDecrementAt(1)) // 2
println(a.loadAt(1)) // 1
println(a.toString()) // [1, 1, 3] 
   //sampleEnd
}
@ExperimentalAtomicApi
fun AtomicLongArray.fetchAndDecrementAt(index: Int): Long(source)

Atomically decrements the element of this AtomicLongArray at the given index by one and returns the old value of the element.

Since Kotlin

2.1

Throws

if the index is out of bounds of this array.

Samples

import kotlin.concurrent.atomics.*
import kotlin.concurrent.atomics.AtomicArray
import kotlin.test.assertFailsWith

fun main() { 
   //sampleStart 
   val a = AtomicLongArray(longArrayOf(1, 2, 3))
println(a.fetchAndDecrementAt(1)) // 2
println(a.loadAt(1)) // 1
println(a.toString()) // [1, 1, 3] 
   //sampleEnd
}