How to pass array of arrays as a series of variables?

Question

I have an array of arrays:

[
  [1,2],
  [2,3],
  [4,3]
]

I want to pass them to a underscore-function as a series of variables.

_.intersection([1,2],[2,3],[4,3])

How can this be done?

This is called argument unpacking http://stackoverflow.com/questions/7077651/python-like-unpacking-in-javascript — Stuart, Sep 25 '15 at 12:34

Tushar · Accepted Answer · 2015-09-25T12:40:12.257

5

You can use apply

_.intersection.apply(_, myArr);

The first parameter to the apply method is the this context to be set on the called method.
The second parameter is an array whose elements will be passed as individual arguments to the called method.

The apply() method calls a function with a given this value and arguments provided as an array (or an array-like object).

edited Sep 25 '15 at 12:40

answered Sep 25 '15 at 12:33

Tushar

1

_Please_ don't encourage users to ask questions without researching them, by answering them. Obvious duplicates like these should really be closed as such. – Cerbrus Sep 25 '15 at 12:43

1 Answers1