Basic Operators

Question 1

What is a unary minus operator and how does it work?

Answer 1

It adds a minus sign to the number, making a positive number negative and a negative number positive

Question 2

What is a Ternary conditional operator? How does it work? What is it short hand for?

Answer 2

Question 3

What is a Nil-Coalescing operator?

Answer 3

Question 4

What are the different types of range operators and what are thier forms?

Answer 4

1. Closed Range Operator
   
   • a..b - goes from a to b, including both a and b, a cannot be greater than b
2. Half-Open Ranger Operator
   
   • a..
3. One-Sided Ranges
   
   • [2…] - starts at 2 and goes to the end of the list
   • […2] - starts at 0 and goes to (and includes 2)
   • [..<2] - starts at 0 and goes to 2 (not including 2)
   • can also be used as let range = …5