Hello, I've been trying to design a function dispatch system and I was wondering if the following is possible with the current boost libraries... I currently parse json data into an vector of variants, I would like to be able to take those variants and invoke an arbitrary boost function object with a consistent return type. Is it possible to determine the function argument types, get the typed value from the proper index in the array of variants, and call the function with arguments? This sounds like something the boost fusion library might be able to do, but I can't find any example code using the library to see if this is the right fit for the capabilities of the library or if what I'm looking to do is not possible without tons of boiler plate. Any insight would be greatly appreciated, Regards, Daniel Perry