Iterators Lab

Functional Programming

Description

In the iterators lab we will be continuing our exploration of iterators and building a few more useful methods. These methods will belong to an Iterators namespace, which we discussed in class. We also will try to use various testing methods to verify that our code is working.

Phase-1

Research the following term and summarize your findings on it two to three sentences:

higher-order function

Pretending we implemented the following methods, update this README with a description of each of the following and an example you've created:

max
min
each
map
filter: note
reduce: note
reject: note

Use the notes provided to help guide you explanation.

Phase-2

Write a test in the test folder for min and implement it in the src/iterators.js folder. There is a test for a max method already if you'd like to use that as inspiration.
Re-implement the each function we did in class, but write the spec for it first. Continue this exercise with map and filter.

Phase-3

Implement the remaining iterator methods in the namespace.

Phase-4

Refactor the following code using map to make only one call to the map function versus the two below.

var myNumbers = [ -1, 2, -3, 4, -5, 6];

var square = function(num) {
	return num * num;
};

var sqrRoot = function(num) {
	return Math.sqrt(num);
};


var sqrNumbers = map(myNumbers, square);
var absNumbers = map(sqrNumbers, sqrRoot);