Re: [Boost-users] How boost::tupe avoid compilor error of get member function?

8 May 2009


      AMDG

simon Ye wrote:
...
boost::tuple provide a member template function get to gain a element of
tuple, As following:
#include "boost\tuple\tuple.hpp"
using namespace boost;
template<typename T>
class TA{public:
    template
    void testfun(T1 e1, T2 e2)
    {
        tuple t1(e1, e2);
        //T1 _e1 = t1.template get<0>(); //works
        *T1 _e1 = t1.get<0>();   //works for boost::tuple*
/*
However, according c++98, t1.get<0>() seems to should be encounter a
compilor error.
*I want to known how boost::tuple avoid this compile error.*
*/
    }
};
The form that you've commented out is the correct syntax.
You cannot use just t1.get<0>() because tuple is
a dependent type.

In Christ,
Steven Watanabe