>if (list.Contains(a))
> System.Console.WriteLine("bad");
> else
> System.Console.WriteLine("good");
> }
Julien states that
>ArrayList list = new ArrayList();
>
>list.Add(new MyClass());
>
>MyClass one = new MyClass();
>
>bool result = list.Contains(one); --> return false with mono, true with
>dot-net
I've attached Dmitry's code that shows the behaviour working exactly
the same on .NET 1.1 and on Mono 1.1.8.
Both output "good".
Julien - can you post more code (ie. an entire test case that shows
your problem) please?
On 7/1/05, Dmitry Kostenko <[EMAIL PROTECTED]> wrote:
> Hello Julien,
>
> I'm sorry but I could not reproduce this behaviour with .NET 1.1. Am I doing
> anyhing wrong?
> Here is the source code:
> ===
> using System.Collections;
>
> public class A
> {
> public string a = "a";
> public string b = "b";
> public string c = "c";
> }
>
> public class Program
> {
> public static void Main()
> {
> ArrayList list = new ArrayList();
> list.Add(new A());
>
> A a = new A();
> if (list.Contains(a))
> System.Console.WriteLine("bad");
> else
> System.Console.WriteLine("good");
> }
> }
> ===
> It outputs "good" for me on .NET 1.1, compiled with csc, which I suppose to be
> the correct behaviour.
>
> I have been confused a lot when you mentioned that new A() == new A() or
> ArrayList.Contains(new A()) may return true for a clean class A
> (without overridden Equals(), GetHashCode(), operator == etc).
>
> Do you have Equals(), GetHashCode() or operator == () overridden?
>
> With best regards,
> Dmitry Kostenko
>
> > ------------------------------
> >
> > Message: 3
> > Date: Thu, 30 Jun 2005 18:16:16 -0400
> > From: Julien Sobrier <[EMAIL PROTECTED]>
> > Subject: Re: [Mono-list] Mono/.Net: object comparison
> > To: [email protected]
> > Message-ID: <[EMAIL PROTECTED]>
> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed
> >
> > Sorry for the delay. I did some tests with 1.1.8, same problem.
> >
> > The code looks like this:
> >
> > ArrayList list = new ArrayList();
> >
> > list.Add(new MyClass());
> >
> > MyClass one = new MyClass();
> >
> > bool result = list.Contains(one); --> return false with mono, true with
> > dot-net
> >
> > I'll add this to bugzilla next week.
> >
> > Thank you
> >
> _______________________________________________
> Mono-list maillist - [email protected]
> http://lists.ximian.com/mailman/listinfo/mono-list
>
--
Martin Hinks
http://www.m-s-d.net
/*
* Created by SharpDevelop.
* User: Martin
* Date: 01/07/2005
* Time: 15:24
*
* To change this template use Tools | Options | Coding | Edit Standard Headers.
*/
using System;
using System.Collections;
namespace TST
{
class MainClass
{
public static void Main(string[] args)
{
ArrayList list = new ArrayList();
list.Add(new A());
A a = new A();
if (list.Contains(a))
System.Console.WriteLine("bad");
else
System.Console.WriteLine("good");
}
}
public class A
{
public string a = "a";
public string b = "b";
public string c = "c";
}
}
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