bc84ffe260
This means we don't have to inject Lazy<T> all over the place when dealing with colleciton builders and circular references since this will automatically just work OOTB. This in theory should also allocate less instances during startup.
35 lines
1.1 KiB
C#
35 lines
1.1 KiB
C#
using System;
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using System.Collections;
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using System.Collections.Generic;
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namespace Umbraco.Cms.Core.Composing
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{
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/// <summary>
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/// Provides a base class for builder collections.
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/// </summary>
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/// <typeparam name="TItem">The type of the items.</typeparam>
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public abstract class BuilderCollectionBase<TItem> : IBuilderCollection<TItem>
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{
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private readonly LazyReadOnlyCollection<TItem> _items;
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/// Initializes a new instance of the <see cref="BuilderCollectionBase{TItem}"/> with items.
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/// </summary>
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/// <param name="items">The items.</param>
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public BuilderCollectionBase(Func<IEnumerable<TItem>> items) => _items = new LazyReadOnlyCollection<TItem>(items);
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/// <inheritdoc />
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public int Count => _items.Count;
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/// <summary>
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/// Gets an enumerator.
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/// </summary>
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public IEnumerator<TItem> GetEnumerator() => ((IEnumerable<TItem>)_items).GetEnumerator();
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/// <summary>
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/// Gets an enumerator.
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/// </summary>
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IEnumerator IEnumerable.GetEnumerator() => GetEnumerator();
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}
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}
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