Quiz 10-15 Answers.txt

1.1. What is the result of the ages.map call? What about ages.each?

The result of ages.map [28, 32, 42, 64] is [56, 64, 84, 128]
The result of ages.each is:
Age is: 28
Age is: 32
Age is: 42
Age is: 64

1.2. Is x in scope during ages.each? x is not in scope.

2.1. What is the value of stuff in a call to print_feels?
I'm not sure I understand the question. However, stuff is a local variable passed to print_feels. In the code, stuff is passed to print_feels from the my_example function. If I were to call my_example(:wednesday), the value of stuff would be "resilient."

3.1. Where are instance variables visible/in scope? Instance variables are in scope within the instance of an object.
3.2. What is the purpose of unit tests? To give the programmer more confidence if code needs to be rewritten/refactored later. And to offer a basic level of assurance that the code written works as intended.
3.3 Can we call methods on a class anywhere we have an instance of that class? Only if the methods are not private.

Doh! My eyes completely glossed over ".sample"