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28 lines
1.0 KiB
28 lines
1.0 KiB
5 years ago
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#if !NET_4_6
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using System.Collections.Generic;
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namespace LinqInternal.Collections
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{
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internal class KeyValuePairEqualityComparer<TKey, TValue> : IEqualityComparer<KeyValuePair<TKey, TValue>>
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{
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private readonly IEqualityComparer<TKey> _keyComparer;
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private readonly IEqualityComparer<TValue> _valueComparer;
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public KeyValuePairEqualityComparer(IEqualityComparer<TKey> keyComparer, IEqualityComparer<TValue> valueComparer)
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{
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_keyComparer = keyComparer ?? EqualityComparer<TKey>.Default;
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_valueComparer = valueComparer ?? EqualityComparer<TValue>.Default;
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}
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public bool Equals(KeyValuePair<TKey, TValue> x, KeyValuePair<TKey, TValue> y)
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{
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return _keyComparer.Equals(x.Key, y.Key) && _valueComparer.Equals(x.Value, y.Value);
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}
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public int GetHashCode(KeyValuePair<TKey, TValue> obj)
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{
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return (_keyComparer.GetHashCode(obj.Key) * 13) + _valueComparer.GetHashCode(obj.Value);
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}
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}
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}
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#endif
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