Pair.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Shared / MS / Internal / Pair.cs / 1305600 / Pair.cs
                        

                        
                            //---------------------------------------------------------------------------- 
//
// Copyright (c) Microsoft Corporation.  All rights reserved.
//
// 
// Description: Pair class is useful when one needs to treat a pair of objects as a singly key in a collection.
// 
// 
// History:
//  08/04/2005 : mleonov - Created 
//
//---------------------------------------------------------------------------

using System; 
using System.Diagnostics;
 
namespace MS.Internal 
{
    ///  
    /// Pair class is useful when one needs to treat a pair of objects as a singly key in a collection.
    /// Apart from providing storage and accessors, the class forwards GetHashCode and Equals to the contained objects.
    /// Both object are allowed to be null.
    ///  
    internal class Pair
    { 
        public Pair(object first, object second) 
        {
            _first = first; 
            _second = second;
        }

        public object First { get { return _first; } } 
        public object Second { get { return _second; } }
 
        public override int GetHashCode() 
        {
            return (_first == null ? 0 : _first.GetHashCode()) ^ (_second == null ? 0 : _second.GetHashCode()); 
        }

        public override bool Equals(object o)
        { 
            Pair other = o as Pair;
            return other != null && 
                (_first != null ? _first.Equals(other._first) : other._first == null) && 
                (_second != null ? _second.Equals(other._second) : other._second == null);
        } 

        private object _first;
        private object _second;
    } 
}
 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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