Lesson 2.5: Truthiness

Question 1

if true
  puts 'hi'
else
  puts 'goodbye'
end

Answer 1

You can use the two boolean objects in conditionals.

Example 1 - The question will always output ‘hi’.

Question 2

You can use the two boolean objects in conditionals.

Example 1 - The below will always output ‘goodbye’.

Answer 2

if false
  puts 'hi'
else
  puts 'goodbye'
end

Question 3

code expression

Answer 3

An expression is a chunk of Ruby code that the Ruby interpreter can evaluate to produce a value.

Question 4

short-circuiting

Answer 4

Short-circuiting is a programming concept by which the compiler skips the execution or evaluation of some sub-expressions in a logical expression. The compiler stops evaluating the further sub-expressions as soon as the value of the expression is determined.
https://www.geeksforgeeks.org/short-circuit-evaluation-in-programming/

Question 5

Truthiness

Answer 5

In fact, Ruby is a very liberal language and considers everything to be truthy other than false and nil.