[Swig-user] Help with std::map

[Borden, D. <db...@kn...>]

Hello,

I'm a new SWIG user and am faced with the following problem.  I have a number of C++ libraries which I'd like to expose (via SWIG) to 3 other languages: Perl, Python & Java.  The C++ libraries all conform to a particular protocol for input and output: all constructor inputs, public function inputs and public function return types are either booleans, ints, doubles, or STL containers (mostly vectors and maps).  Using the various std_*.i interface files I've been able to wrap nearly all of my functions and classes, but I've run into a roadblock in the use of std::map in perl.  When I return a c++ map to perl, I expect something that should act like a reference to a hash, but the object I get does not seem to support iteration, or even a method for reporting its keys.  Without knowing the valid keys for the map, the "get" method is mostly useless.

Any help would be greatly appreciated.

Regards, DLB




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