Re: How to make code accepting differet types work?

Jim Langston wrote:


This looks a bit flawed. When F is std::string won't it recurse
indefinitely? Also if the string has any whitespace in it, you'll find
it scans only to the first whitespace.

I would do this:

template < typename T, typename F >
bool StrmConvert( T& to, const F& from )
{
   std::stringstream ss;
   ss << from;
   return ( ss >> to );
}

which also returns whether the conversion worked.

I would then do partial specialisation.

(Can one specialise for the case where T and F are the same?: i.e
below)

template < typename T > bool StrmConvert<T, T >( T & to, const F& from
)
{
  to = from;
  return true;
}

template < typename T > bool StrmConvert< T, std::string >
template < typename T > bool StrmConvert< std::string T >

then in case it doesn't know which one to pick:

template < > bool StrmConvert< std::string, std::string >

(fill them in).