On 21 Nov 2011 at 13:16, Stefan Seefeld wrote:
> >> I was wondering if it's possible to hook python functions as slots into
> >> boost::signal or boost::signal2 signals? I found an old thread that said
> >> it wasn't directly possible, but it was from 2004.
> > Integrating this properly - or rather an enhanced version of it - was
> > one of the ideas mooted for the next version of Boost.Python some
> > months ago. Some clever metaprogramming can even allow python to work
> > with arbitrary function pointers for callbacks :) However I don't
> > think it's on the cards for what Jim is currently planning.
>
> Out of curiosity: what are the issues preventing this from "Just Work" ?
Well, as a minimum, my code would need to be recoded to use Boost
rather than my own metaprogramming library. It would then need to
pass peer review etc.
However, as a wider issue, deep thought would need to be put into how
exactly BPL traverses between "python" and "not python" and a
strictly defined API decided upon. Right now, this boundary isn't
tightly defined e.g. when you iterate through a wrapped container,
exactly how far outside python is one venturing etc. Defining it
tightly and not accidentally introducing problems for yourself later
would be real tough though. Hence the deep thought being necessary.
Niall
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