Week 3

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Class Outline

Week 2 Review & Introduction

Posting in Gitter // Making issues
Functions
Data structures

Functions continued

Section 1: Using functions (liberally!)

Function anatomy
- Naming functions
- Providing arguments
- The function body
- The return statement
Thinking functionally
- Programs are data and its transformations
- Functions are just transformations on data
- Functions as values
Lab 1

Live coding: refactoring code into functions

Step through the code and discuss
Imagine alternative code flows
Organize the code
Make code DRYer ('don't repeat yourself')
- Redundant code is a headache to maintain

underscore.js

Section 2: Library overview

Selecting (filtering for) elements in lists
each: No more for loops!^*
Lab 2

^*Mostly!

Homework Assignment (Due: Thursday, February 7th)

Complete Week 3 Lab1 (entirely)
Complete week 3 Lab2 (parts 1 and 4 only)