javascript - underscore.js - Determine if all values in an array of arrays match

Question

I have an array of arrays, which looks something like this:

[["Some string", "Some other string"],["Some third string", "some fourth string"]]

I think I can use the _.all method in Underscore to determine if all of the arrays match 100% (that is all of their values match), but I'm not sure how to write the required iterator to run the check.

Anyone have an idea?

Answer 1

Why not intersection? (if you really want to use some Underscore functions for this) http://underscorejs.org/#intersection

If the arrays are of the same length, and the length of the intersection equals to the length of the arrays, then they all contain the same values.