53 lines
2.0 KiB
C#
53 lines
2.0 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.Diagnostics.CodeAnalysis;
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using JetBrains.Annotations;
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namespace UnityEngine.Rendering
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{
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/// <summary>
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/// A set of extension methods for collections
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/// </summary>
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public static class RemoveRangeExtensions
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{
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/// <summary>
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/// Tries to remove a range of elements from the list in the given range.
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/// </summary>
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/// <param name="list">The list to remove the range</param>
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/// <param name="index">The zero-based starting index of the range of elements to remove</param>
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/// <param name="count">The number of elements to remove.</param>
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/// <param name="error">The exception raised by the implementation</param>
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/// <typeparam name="TValue">The value type stored on the list</typeparam>
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/// <returns>True if succeed, false otherwise</returns>
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[CollectionAccess(CollectionAccessType.ModifyExistingContent)]
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[MustUseReturnValue]
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public static bool TryRemoveElementsInRange<TValue>([DisallowNull] this IList<TValue> list, int index, int count, [NotNullWhen(false)] out Exception error)
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{
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try
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{
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if (list is List<TValue> genericList)
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{
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genericList.RemoveRange(index, count);
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}
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else
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{
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if (index < 0) throw new ArgumentOutOfRangeException(nameof(index));
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if (count < 0) throw new ArgumentOutOfRangeException(nameof(count));
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if (list.Count - index < count) throw new ArgumentException("index and count do not denote a valid range of elements in the list");
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for (var i = count; i > 0; --i)
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list.RemoveAt(index);
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}
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}
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catch (Exception e)
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{
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error = e;
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return false;
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}
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error = null;
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return true;
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}
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}
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}
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