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\"]]
         


        

Answer 1

If you want to check that the elements are the same and in the same order, I would go with:

arrayEq = function(a, b) {
  return _.all(_.zip(a, b), function(x) {
    return x[0] === x[1];
  });
};

Even more neatly in coffeescript:

arrayEq = (a,b) ->
    _.all _.zip(a,b), (x) -> x[0]==x[1]