mdn102

var _ = {};


/*********IDENTITY**********/
_.identity = function(val) {
    return val;
};

/*********FIRST**********/
_.first = function(array, n) {

mdn102

// #2
/*
Write an "assertArraysEqual" function from scratch.
Assume that the arrays in question contain only scalar values (i.e., simple values like strings or numbers).
Do not use JSON.stringify(), Array.join(), or any other "convert the array to a string so I can compare two strings" type of technique to implement this.
Examples
SUCCESS CASE
var expected = ['b', 'r', 'o', 'k', 'e', 'n'];
var actual = 'broken'.split('');
assertArraysEqual(actual, expected, 'splits string into array of characters');