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  1. November 21st, 2012, 05:50 AM

    Thread: get return type of function

    by superbonzo
    Replies
    4
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    1,311

    Re: get return type of function

    the easiest way is to write a trait class



    template <class T>
    struct grad_type {};

    template <>
    struct grad_type<Scalar> { typedef Vector type; };
  2. November 21st, 2012, 04:51 AM

    Thread: get return type of function

    by superbonzo
    Replies
    4
    Views
    1,311

    Re: get return type of function

    in c++11, you can simply write

    "auto Y = grad(x);"
    "auto const& Y = grad(x);"
    ...

    or

    "typedef decltype(grad(x)) GradType;
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