insert

Description

Returns a new sequence with all the elements of the original, an a new element inserted the position described by a given iterator.

Synposis

template<
    typename Sequence,
    typename Pos,
    typename T
    >
unspecified insert(Sequence const& seq, Pos const& pos, T const& t);

Table 1.65. Parameters

Parameter	Requirement	Description
`seq`	A model of Forward Sequence	Operation's argument
`pos`	A model of Forward Iterator	The position to insert at
`t`	Any type	The value to insert

Expression Semantics

insert(seq, p, t);

Return type: A model of Forward Sequence.

Semantics: Returns a new sequence, containing all the elements of seq, in their original order, and a new element with the type and value of t inserted at iterator pos.

Complexity

Constant. Returns a view which is lazily evaluated.

Header

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

Example

const vector<int,int> vec(1,2);
assert(insert(vec, next(begin(vec)), 3) == make_vector(1,3,2));