• Home
• org.jetbrains.kotlin
• kotlin-compiler
• 1.9.22
• source code
• CallOnceFunction.kt

×

Project download

Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance.
Project price only 1 $

You can buy this project and download/modify it how often you want.

org.jetbrains.kotlin.utils.CallOnceFunction.kt Maven / Gradle / Ivy

/*
 * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
 * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
 */

package org.jetbrains.kotlin.utils

import java.util.concurrent.atomic.AtomicReference

class CallOnceFunction(private val defaultValue: T, delegate: Function1) : Function1 {
    private val functionRef: AtomicReference?> = AtomicReference(delegate)

    override fun invoke(p1: F): T = functionRef.getAndSet(null)?.invoke(p1) ?: defaultValue
}