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28 lines
551 B
28 lines
551 B
using System.Collections;
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namespace Connected.Expressions.Translation;
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internal sealed class Grouping<TKey, TElement> : IGrouping<TKey, TElement>
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{
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public Grouping(TKey key, IEnumerable<TElement> group)
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{
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Key = key;
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Group = group;
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}
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public TKey Key { get; }
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private IEnumerable<TElement> Group { get; set; }
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public IEnumerator<TElement> GetEnumerator()
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{
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if (!(Group is List<TElement>))
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Group = Group.ToList();
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return Group.GetEnumerator();
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}
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IEnumerator IEnumerable.GetEnumerator()
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{
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return Group.GetEnumerator();
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}
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} |