[IronPython] list -> Array conversion in Beta 8

J. Merrill jvm_cop at spamcop.net
Fri Jun 30 15:13:15 PDT 2006


As was pointed out, this was intentionally changed.  In your sample, you should be able to do
    print myClass.SumArray( tuple(L) )
That is, just convert the list to a tuple.

At 03:03 PM 6/30/2006, Milman, Seth wrote

>Hi,
>I just upgraded from Beta 7 to Beta 8 and I'm having a problem passing
>runtime lists to assembly functions that expect an array.  In beta 7,
>the list went through function
>IronPython.Runtime.Converter.TryConvertToArray.  In beta 8, it is passed
>to IronPython.Runtime.NewConverter.ConvertToArray.
>
>Beta 7 seemed to work, Beta 8 doesn't.  Is this new behavior by design?
>If so, how should I work around it?
>
>Here is a repro:
>
>
>// C# Code
>Namespace mySpace {
>        public class myClass {
>                public static double SumArray( System.Double[] a ) {
>                        double sum = 0.0;
>                        foreach( double d in a ) {
>                                sum += d;
>                        }
>                        return sum;
>                }
>        }
>}
>
>
># Python code
>... 
>L = [1.0, 2.0, 3.0]
>print myClass.SumArray( L )
>
>
>In beta 7 it works.
>In beta 8, I get this exception trace:
>
>expected array_float, found list [snip]
>
>Any suggestions?
>
>Thanks,
>
>Seth Milman


J. Merrill / Analytical Software Corp




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