nikita.movshin
65244b4bea
Change the copyright from "JetBrains s.r.o." to "JetBrains s.r.o. and Kotlin Project contributors" Update only 2 lines copyright.
26 lines
817 B
Kotlin
26 lines
817 B
Kotlin
/*
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* Copyright 2010-2018 JetBrains s.r.o. and Kotlin Programming Language contributors.
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* Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
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*/
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package kotlin.collections
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internal interface EqualityComparator {
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/**
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* Subclasses must override to return a value indicating
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* whether or not two keys or values are equal.
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*/
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abstract fun equals(value1: Any?, value2: Any?): Boolean
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/**
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* Subclasses must override to return the hash code of a given key.
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*/
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abstract fun getHashCode(value: Any?): Int
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object HashCode : EqualityComparator {
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override fun equals(value1: Any?, value2: Any?): Boolean = value1 == value2
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override fun getHashCode(value: Any?): Int = value?.hashCode() ?: 0
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}
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} |