std::map and function pointer as the value with different signature

Question

I want to store function pointers with different signature in a std::map as a value. Is this possible in C++

Paul Manta · Accepted Answer · 2012-09-26 06:02:38Z

3

It is possible by using something like Boost.Any or Boost.Variant. Keep in mind, however, that you will have to remember somehow what the signature of the function stored (hidden) inside the boost::any object is, so you can retrieve it.

answered Sep 26, 2012 at 6:02

Paul Manta

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Simon Meister · Accepted Answer · 2012-09-26 08:11:03Z

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You do not even need to use boost. You can simply use a functor( overload () operator) as a base class and inherit from it for every different function you need.

answered Sep 26, 2012 at 8:11

Simon Meister

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Simon Meister Over a year ago

Sure, but it would be easy to change the functions from using a return type to reference parameters. Of course i agree to using boost, if you have no chance to change the functions returntype (3rd party/external functions)

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