// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
namespace System.Collections.Generic
{
    /// <summary>
    /// Used internally to control behavior of insertion into a <see cref="Dictionary{TKey, TValue}"/> or <see cref="HashSet{T}"/>.
    /// </summary>
    internal enum InsertionBehavior : byte
    {
        /// <summary>
        /// The default insertion behavior.
        /// </summary>
        None = 0,
 
        /// <summary>
        /// Specifies that an existing entry with the same key should be overwritten if encountered.
        /// </summary>
        OverwriteExisting = 1,
 
        /// <summary>
        /// Specifies that if an existing entry with the same key is encountered, an exception should be thrown.
        /// </summary>
        ThrowOnExisting = 2
    }
}