zippy

zippy is a tiny library that implements the zip and the more general zipWith. It was factored out of the "hempwick" project, since it's the only part of it I've used regularly and the project was too big for me to maintain.

Install

npm install zippy

Methods:

zip(xs, ys, ...)

Returns a list with elements (x_i, y_i, ...). For example:

> zippy.zip([1, 2, 3], [1, 4, 9])
[[1, 1], [2, 4], [3, 9]]

zip may take more than two arguments.

protip:

> var transpose = function(a) { return zippy.zip.apply(null, M); };

zipWith(fxn, xs, ys, ...)

zipWith is a more general form of zip, which takes a function that "does something" with each set of x_i, y_i. In fact, zip is implemented with zipWith! For an example:

> zippy.zipWith(function(x,y) {return x+y;}, [1, 2, 3], [3, 2, 1])
[4, 4, 4]

Testing

npm test

Pull requests?

Why yes, I would be interested!

License

MIT.