Thread: Passing a set to a template function

  1. #1
    Registered User
    Join Date
    Oct 2004

    Passing a set to a template function

    Hi all,

    I'm writing this template class and one of the template functions you pass a std::set to of a template type which then returns one of the elements in the set (which is of course a template type). I have wrote it and it compiles fine, however when i cant seem to use the function correctly without the compiler giving an error. Here is what im trying to do.

    This is the template stuff
    template<typename myType>
    class MyTemplateClass
    const myType& PickElement (cont std::set<myType>& mySet) const
     // returns one of the elements in the set
    Now how do i use the above function? This is what i have currently got:

    std::set<MyEnum> enumSet ;
    MyEnum res ;
    res = PickElement<MyEnum>(enumSet) ;
    Doing a full rebuild resulted in a different error:

    The compiler generates the following error:

    error C2440: 'type cast' : cannot convert from 'overloaded-function' to 'MyEnum'
    Thanks for any help
    Last edited by cloudy; 10-09-2007 at 02:21 AM.

  2. #2
    Guest Sebastiani's Avatar
    Join Date
    Aug 2001
    Waterloo, Texas
    PickElement is not a templated function. simply call it like:

    res = PickElement(enumSet) ;
    #include <cmath>
    #include <complex>
    bool euler_flip(bool value)
        return std::pow
            std::complex<float>(0, 1) 
            * std::complex<float>(std::atan(1.0)
            *(1 << (value + 2)))
        ).real() < 0;

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