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

Subject: Re: [Boost-users] How boost::tupe avoid compilor error of get member function?
From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2009-05-08 09:14:57

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<typename T1, typename T2>
>     void testfun(T1 e1, T2 e2)
>     {
>         tuple<T1, T2> 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<T1, T2> is
a dependent type.

In Christ,
Steven Watanabe