[Mono-dev] GetHashCode() implementation for class string
gnorton at novell.com
Sun Dec 7 23:51:51 EST 2008
The java version cannot be used either, as it is GPL'd.
Please do not advise people to look at other sources without
understanding all the implications.
On Mon, 2008-12-08 at 07:25 +0300, Евгений Гришуль wrote:
> I know about that violations and have never read their code. Mono
> contributors can use Java version of hash code function. I just
> suggest possible ways to solve problem =)
> 2008/12/8 Atsushi Eno <atsushi at ximian.com>
> Do NOT read MS BCL source code. Jack, now we will never accept
> your contributions to protect copyright violation possibly
> brought by you.
> It is EXPLICITLY written in our TOP page for contribution.
> Atsushi Eno
> Jack wrote:
> You can use Java version of hash code that loos like:
> public static int JavaStringHashCode( string
> value )
> int result = 0;
> foreach( char character in value )
> result = 31 * result + character;
> return result;
> Also you can look into Microsoft's BCL sources to find
> appropriate implementation.
> Eugeny Grishul
> On Mon, 08 Dec 2008 01:47:43 +0300, Alan McGovern
> <alan.mcgovern at gmail.com> wrote:
> On Mon, Dec 1, 2008 at 9:44 PM, CarGa
> <carga at mail.ru> wrote:
> Hello, all!
> I was directed here by Atsushi Eno
> from mono-olive list with this
> question/request about GetHashCode()
> DependencyProperty class (that lays at
> the very base of entire WWF and WPF
> libraries) heavily depends on quality
> of GetHashCode() method since we use
> it to find any particular
> DependencyProperty in some huge
> DependencyProperty> of others.
> If i understand correctly, you're using the
> hashcode fo a DP as a unique
> identifier. This is wrong. Hashcodes are by
> definition *not* a unique
> identifer and should not be used as such.
> You're completly misusing the
> hashcode in this case. Your code will never
> run correctly if you are using
> .GetHashCode() to supply the 'int' in
> Dictionary<int, DependencyProperty>
> Grishul Eugeny
> Mono-devel-list mailing list
> Mono-devel-list at lists.ximian.com
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