IDeque.cs

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using System;
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
 
namespace IKVM.CoreLib.Collections
{
 
    internal interface IDeque<T> : IReadOnlyCollection<T>
    {
 
        void Clear();
 
        bool IsEmpty { get; }
 
        void InsertFirst(T item);
 
        bool TryRemoveFirst([MaybeNullWhen(false)] out T result);
 
        T RemoveFirst();
 
        bool RemoveFirst(T item);
 
        void InsertLast(T item);
 
        bool TryRemoveLast([MaybeNullWhen(false)] out T result);
 
        T RemoveLast();
 
        bool TryPeekFirst([MaybeNullWhen(false)] out T result);
 
        T PeekFirst();
 
        bool TryPeekLast([MaybeNullWhen(false)] out T result);
 
        T PeekLast();
 
        void CopyTo(T[] a);
 
    }
 
}