zip

Description

Zips sequences together to form a single sequence, whos members are tuples of the members of the component sequences.

Synopsis

template<
    typename Sequence1,
    typename Sequence2,
    ...
    typename SequenceN
    >
typename result_of::zip<Sequence1, Sequence2, ... SequenceN>::type
zip(Sequence1 const& seq1, Sequence2 const& seq2, ... SequenceN const& seqN);

Table 1.79. Parameters

Parameter	Requirement	Description
`seq1` to `seqN`	Each sequence is a model of Forward Sequence.	Operation's argument

Expression Semantics

zip(seq1, seq2, ... seqN);

Return type: A model of Forward Sequence.

Semantics: Returns a sequence containing tuples of elements from sequences seq1 to seqN. For example, applying zip to tuples (1, 2, 3) and ('a', 'b', 'c') would return ((1, 'a'),(2, 'b'),(3, 'c'))

Complexity

Constant. Returns a view which is lazily evaluated.

Header

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

Example

vector<int,char> v1(1, 'a');
vector<int,char> v2(2, 'b');
assert(zip(v1, v2) == make_vector(make_vector(1, 2),make_vector('a', 'b'));