Hi Assaf.
Maybe you should try sending a tied array, so that
for my $rec (@array) {...}
will work. (hopefully Perl won't pre-fatch all the items...)
See the documentation for the 'tie' command to see which methods you
need to implement, and Tie::Array for some shortcuts.
Shmuel.
Assaf Gordon wrote:
> Hello,
>
> I've have an XS module that exports a C++ class.
> Following example EX7 in Dean Roehrich's CookBookA [1], my class/package
> compiles and works fine.
>
> Now,
> In the XS/CPP class, I use an STL container to store some information.
> What would be the most perl-like way to allow the Perl programmer to iterate
> over all the elements in my CPP class ?
>
> For the sake of this argument,
> Let's assume the container is a simple "std::list<int>" - how do expose this
> to the Perl programmer ?
> I couldn't find a perl typemap that would go with
> std::list<int>::const_itearator, so exposing begin()/end() doesn't work
> (perhaps I missed something, online examples are scarce with XS+CPP+STL).
>
> Another complication:
> I can't return an perl list/array containing all the elements (there are too
> many elements) - I need to iterate them in a perl loop.
>
> I'd imagine something like:
> ===
> my $obj = MyClass->new();
> my $iter = $obj->begin();
> while ( my $value = $obj->get_next($iter) ) {
> # Do something with $value
> }
> ===
>
> I realize it's not a very perlish style, so any ideas and suggestion would be
> appropriated.
>
>
> Thanks,
> -gordon
>
>
>
> [1]
> http://search.cpan.org/~dmr/CookBookA-19960430/
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