zip combines corresponding elements from multiple iterables into tuples. The returned iterable can be collected into an array or passed directly to Dict when separate keys and values must become key-value pairs. section 6.6.1 section 15.4.2
A practical zip workflow is:
- Start with corresponding iterables, such as words and numbers or two alphabets. section 6.6.1 section 15.4.2
- Call zip to produce an iterable of tuples. section 6.6.1 section 15.4.2
- Use collect(zip(...)) to materialize the tuples, or give zip(...) directly to Dict. section 6.6.1 section 15.4.2
Pairing values and building a dictionary
julia> words = ["one", "two"] julia> nums = [1, 2] julia> collect(zip(words, nums)) [("one", 1), ("two", 2)] julia> Dict(zip(words, nums)) Dict("one" => 1, "two" => 2) The same pattern maps an alphabet to a shuffled substitute alphabet for a substitution cipher. section 6.6.1 section 15.4.2
julia> collect(zip(alphabet, substitute))
6-element Vector{Tuple{Char, Char}}:
('A', 'A')
('B', 'C')
('C', 'F')
('D', 'B')
('E', 'D')
('F', 'E')
Inspect the alphabet-to-substitute-alphabet tuples produced by collect(zip(...)) before turning them into a dictionary. section 15.4.2
