std::lexical_cast - is there such a thing?

Question

Does the C++ Standard Library define this function, or do I have to resort to Boost?

I searched the web and couldn\'t find anything except Boost, but I thought I\'d

Answer 1

There's no std::lexical_cast, but you can always do something similar with stringstreams:

template 
T lexical_cast(const std::string& str)
{
    T var;
    std::istringstream iss;
    iss.str(str);
    iss >> var;
    // deal with any error bits that may have been set on the stream
    return var;
}