ZipNsequence

A GYD template for producing ZipSequences of arbitrary arity.

Usage:

1. Import one of the pre-generated ZipSequence swift source files.
2. Use them just like you would expect:

let a = [1, 2, 3]
let b = [4, 5, 6]
let c = [7, 8, 9]
for (x, y, z) in zip(a, b, c) {
       print("\(x) \(y) \(z)")
}

Generating Custom Arity ZipSequences

If the pre-generaged ZipSequences don’t suite your needs, generate your own:

1. Obtain a copy of the Generate Your Boilerplate preprocessor (gyb.py) from the Swift repository.
2. Run is with the following syntax:

python gyb.py --line-directive '' -D arityS=3 ZipNSequence.swift.gyb -o Zip3Sequence.swift

• The input gyb tempalte is ZipNSequence.swift.gyb
• The arity is 3 (in this example)
• The output file is Zip3Sequence.swift