pop_back

Description

Returns a new sequence, with the last element of the original removed.

Synopsis

template<
    typename Sequence
    >
typename result_of::pop_back<Sequence const>::type pop_back(Sequence const& seq);

Table 1.69. Parameters

Parameter	Requirement	Description
`seq`	A model of Forward Sequence	Operation's argument

Expression Semantics

pop_back(seq);

Return type: A model of Forward Sequence.

Semantics: Returns a new sequence containing all the elements of seq, except the last element. The elements in the new sequence are in the same order as they were in seq.

Complexity

Constant. Returns a view which is lazily evaluated.

Header

#include <boost/fusion/algorithm/transformation/pop_back.hpp>
#include <boost/fusion/include/pop_back.hpp>

Example

assert(___pop_back__(make_vector(1,2,3)) == make_vector(1,2));