MVC/ Test Classes Modules Lab
we've installed oh-my-zsh for the terminal (in addition to pry that we had before): https://github.com/robbyrussell/oh-my-zsh
| --- | Type | Class |
|---|---|---|
| 1, 2, 3 | number | FixNum |
| 1.5 | number | Float |
Objects- has data & behavior
Classes- objects, data, methods
Lauren's analogy: a class is similar to an email template, and every time you create a class.new, you're creating a new "instance" of the class.. i.e. you're creating a new email with the same default lines (methods in the class) and so on.
Homework Review- Flickr hash
9 image = []
10 items.each { |img_hash|
11 image << Images.new(img_hash)
12 }
13
14# image = items.map { |img_hash|
15# Images.new(img_hash)
16# }
17# The above .map function is equivalent to Lines 9-12
18#pre-optimization is a root of all evil. Best to leave functions that the user may or may not perform as methods, as opposed to initialization. You want the program to be as lazy as possible. "Don't go out with a shovel unless you know there's snow in the driveway."
Approaching problems: not so much how do I know how to solve the problem, more of "how would I know if the problem is solved?"
Start with the most discrete (most self-contained) problems, ones that doesn't have as much dependencies on other variables.
prism