wasSharp – Rev 11

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///////////////////////////////////////////////////////////////////////////
//  Copyright (C) Wizardry and Steamworks 2013 - License: GNU GPLv3      //
//  Please see: http://www.gnu.org/licenses/gpl.html for legal details,  //
//  rights of fair usage, the disclaimer and warranty conditions.        //
///////////////////////////////////////////////////////////////////////////

using System.Collections.Generic;
using System.Linq;

namespace wasSharp.Collections.Utilities
{
    public static class Extensions
    {

        /// <summary>
        ///     Compares two dictionaries for equality.
        /// </summary>
        /// <typeparam name="TKey">key type</typeparam>
        /// <typeparam name="TValue">value type</typeparam>
        /// <param name="dictionary">dictionary to compare</param>
        /// <param name="otherDictionary">dictionary to compare to</param>
        /// <returns>true if the dictionaries contain the same elements</returns>
        public static bool ContentEquals<TKey, TValue>(this IDictionary<TKey, TValue> dictionary,
            IDictionary<TKey, TValue> otherDictionary)
        {
            return
                (dictionary ?? new Dictionary<TKey, TValue>()).Count.Equals(
                    (otherDictionary ?? new Dictionary<TKey, TValue>()).Count) &&
                (otherDictionary ?? new Dictionary<TKey, TValue>())
                    .OrderBy(kvp => kvp.Key)
                    .SequenceEqual((dictionary ?? new Dictionary<TKey, TValue>())
                        .OrderBy(kvp => kvp.Key));
        }
    }
}

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