[IronPython] Lamba Expressions in IronPython
fuzzyman at voidspace.org.uk
Mon Apr 7 02:03:21 CEST 2008
Ben Hall wrote:
> Hi everyone,
> Just been playing around with C# and IronPython interop and I wanted
> to define a lambda expression.
> My CLR object is just a wrapper around a generic list (as generics
> aren't supported?)
> public class GenericWrapper : List<int>
> I tried to do a lamba expression to pull back a item from the
> collection, however I got the following exception:
>>>> i = GenericWrapper()
>>>> v = i.Find(item => item == 1)
> File "", line 1
> v = i.Find(item => item == 1)
lambda item: item == 1
In general, arbitrary C# syntax doesn't "just work" with IronPython and
you have to stick to Python syntax. ;-)
(However, if "Find" expects a particular type of delegate you may have
to use CallTarget0 or create a delegate).
> SyntaxError: unexpected token '>'
> I guess I can use a method\delegate like in C# 2.0, but is there any
> way to do anything like Lamba Expressions? Or is there something
> similar in Python?
> Any help would be great.
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