...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
Returns a new sequence with an element added at the beginning.
template<
typename Sequence,
typename T
>
typename result_of::push_front
<Sequence, T>::type push_front(
Sequence const& seq, T const& t);
Table 1.83. Parameters
Parameter |
Requirement |
Description |
---|---|---|
|
A model of Forward Sequence |
Operation's argument |
|
Any type |
The value to add to the beginning |
push_back
(seq, t);
Return type:
Semantics: Returns a new sequence, containing
all the elements of seq
,
and new element t
appended
to the beginning. The elements are in the same order as they were in
seq
.
Constant. Returns a view which is lazily evaluated.
#include <boost/fusion/algorithm/transformation/push_front.hpp> #include <boost/fusion/include/push_front.hpp>
assert(push_front
(make_vector
(1,2,3),0) ==make_vector
(0,1,2,3));