...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
TR1 describes 2 utility functions for creating TR1
Tuple. make_tuple
builds a tuple out of it's argument list, and tie
builds a tuple of references to it's arguments. The details of these creation
functions are described in this section.
template<typename T1, typename T2, ..., typename TN> tuple<V1, V2, ..., VN> make_tuple(const T1& t1, const T2& t2, ..., const TN& tn);
Where Vi
is X&
if the cv-unqualified type Ti
is reference_wrapper<X>
,
otherwise Vi
is Ti
.
Returns: tuple<V1, V2, ..., VN>(t1, t2, ..., tN)
template<typename T1, typename T2, ..., typename TN> tuple<T1&, T2&, ..., TN&> tie(T1& t1, T2& t2, ..., TN& tn);
Returns: tuple<T1&, T2&, ...,
TN&>(t1, t2, ..., tN). When argument ti
is ignore
, assigning any
value to the corresponding tuple element has no effect.