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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
/*============================================================
**
** Interface: ICollection
**
**
**
**
** Purpose: Base interface for all generic collections.
**
**
===========================================================*/
namespace System.Collections.Generic {
using System;
using System.Runtime.CompilerServices;
using System.Diagnostics.Contracts;
// Base interface for all collections, defining enumerators, size, and
// synchronization methods.
// Note that T[] : IList<T>, and we want to ensure that if you use
// IList<YourValueType>, we ensure a YourValueType[] can be used
// without jitting. Hence the TypeDependencyAttribute on SZArrayHelper.
// This is a special workaround internally though - see VM\compile.cpp.
// The same attribute is on IEnumerable<T> and ICollection<T>.
[TypeDependencyAttribute("System.SZArrayHelper")]
public interface ICollection<T> : IEnumerable<T>
{
// Number of items in the collections.
int Count { get; }
bool IsReadOnly { get; }
void Add(T item);
void Clear();
bool Contains(T item);
// CopyTo copies a collection into an Array, starting at a particular
// index into the array.
//
void CopyTo(T[] array, int arrayIndex);
//void CopyTo(int sourceIndex, T[] destinationArray, int destinationIndex, int count);
bool Remove(T item);
}
}
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