[boost] How to do this in with boost -- assert(typeid(T)==typeid(bool) )

[Derek Ross]

Hello,

I'd like to convert this run-time assertion to a compile time MPL check:

template <class T>
bool SetOption(COptionInfo& o, const char* key, const T& value)
{
assert( typeid(T)==typeid(bool)
|| typeid(T)==typeid(int)
|| typeid(T)==typeid(double)
|| typeid(T)==typeid(string));
...etc...

As you can probably guess, this is a template function that should only
be called with types of int, bool, std::string or double.

From what I've read in this newsgroup, the boost::mpl library should be able to handle this. But, I wouldn't be surprised if there was an easy C++ solution too.

Thanks,
Derek Ross.


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