The lodash zip() function normally accepts two or more arrays as arguments. Can it accept an array of arrays?

For example, given an object like var aa = [[1,2,3],[4,5,6]]; and a desired output of [[1,4],[2,5],[3,6]] zip() must be called like _.zip(aa[0],aa[1]). For an array of arrays with more than two elements, typing the indexes into the function call bees repetitive.

Calling _.zip(aa) doesn't work. It just nests the original array of arrays.

The lodash zip() function normally accepts two or more arrays as arguments. Can it accept an array of arrays?

For example, given an object like var aa = [[1,2,3],[4,5,6]]; and a desired output of [[1,4],[2,5],[3,6]] zip() must be called like _.zip(aa[0],aa[1]). For an array of arrays with more than two elements, typing the indexes into the function call bees repetitive.

Calling _.zip(aa) doesn't work. It just nests the original array of arrays.

• javascript
• arrays
• lodash

2 Answers 2

You can splat your array of arrays using apply or the ES2015 spread operator (...):

// call zip with a `this` context of the lodash object
// and with each entry in aa as a separate argument
// e. g. zip(aa[0], aa[1], ..., aa[N]);
_.zip.apply(_, aa);

// Same call, but using ES2015
_.zip(...aa)

Sure, try this:

_.zip.apply(_, aa)