[IronPython] System.Exception: can't convert 66.6 to System.Int32

[Travis Watkins]

On 5/8/05, PhiHo Hoang <phiho.hoang at rogers.com> wrote:
> Jim Hugunin wrote:
> 
> > PhiHo Hoang wrote:
> > >     Why 66.6 cannot be converted to System.Int32 ?
> > 66.6 can be both explicitly converted to an int and compared to one.
> 
> >    >>> int(66.6)
> >    66
> >    >>> 12 < 66.6
> >    True
> >    >>> 66.6 < 12
> >    False
> 
> > It's a good thing that 66.6 won't be implicitly converted to an int
> > since that would lose precision.
> 
> > > >>> a
> > > [333, 1234.5, 1, 333, -1, 66.6]
> > > >>> a.sort()
> > > System.InvalidOperationException: Failed to compare two elements in
> > > the array. -
> 
> > However, you're right that IronPython doesn't handle this correctly for
> > sorting an array.  We already have one bug for sorting mixed-type arrays
> > (bug #63) but it's nice to add this case as well to the set we need to
> > fix.
> 
>     Talking of precision, for sorting, wouldn't it be more precise to
>     convert int to float instead of float to int, when there is a mixture ?
> 
>     Thanks,
> 
>     PhiHo
> 
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> 

Yeah, you could probably convert all the ints to floats during the
comparison then convert them back afterward.

-- 
Travis Watkins
http://www.realistanew.com