[Mono-dev] GetHashCode() implementation for class string
eugeny.grishul at gmail.com
Sun Dec 7 23:25:25 EST 2008
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
>> 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() method.
>>>> DependencyProperty class (that lays at the very base of entire WWF and
>>>> libraries) heavily depends on quality of GetHashCode() method since we
>>>> 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
>>> .GetHashCode() to supply the 'int' in Dictionary<int, DependencyProperty>
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