Is there a way to pass a python function ptr to a c++ method from a python script?
ptmcg at austin.rr._bogus_.com
Tue Jun 6 04:32:32 CEST 2006
"liam_herron" <liam_herron at hotmail.com> wrote in message
news:1149555886.251441.188180 at i39g2000cwa.googlegroups.com...
> I have a core c++ library that is exposed to python through the
> boost_python framework.
> I would like to write the core of a Newton's method solver in C++ and
> be able to write the
> functions that are evaluated to be in python. Does anyone have any
> ideas on this?
My suggestion would be to prototype in all-Python first. This will let you
work out the kinks of your call/callback interfaces. Then see if the
Newton's method part is a bottleneck worth converting to C++. My suspicion
is that the performance (for all but trivial functions) will be in the
function you are solving for, not in the Newton's metod. So be sure to test
with a function that you feel is representative of those you want to solve
for, not just a simple parabola.
Then, stop thinking in C++. "Function pointer"? A function in Python is
an object, a callable. You should be able to just treat it like one.
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