OK thank you very much! Best regards Mello
On Fri, Feb 24, 2012 at 6:17 PM, Jeff Hardy <jdha...@gmail.com> wrote: > On Fri, Feb 24, 2012 at 12:00 PM, Cesar Mello <cme...@gmail.com> wrote: > > Thank you very much for the quick response Jeff! > > > > First, let me clarify I am a Python newbie, so my assumptions about > Python > > may be all wrong. > > > > I had tried __float__ in a Python object, but it does not work implicitly > > inside expressions (and I think that's the correct behavior). You still > have > > to use float(a) for the conversion to be used. > > > > Now I implemented the C# implicit conversion to double() and I get the > same > > behavior (it works if I use float(a) in the expression but if I use a * > 5.0 > > for example I get the error: "unsupported operand type(s) for *: > 'DataValue' > > and 'float'. > > Ah, you missed this first part: you'll need to overload the arithmetic > operators for your objects. > > Python: Define __add__, __sub__, etc. > (http://docs.python.org/reference/datamodel.html#object.__add__) > C#: Define operator+, operator-, etc. > (http://msdn.microsoft.com/en-us/library/aa288467(v=vs.71).aspx) > > - Jeff >
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