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iOS Swift 2.0 Collections and Control Flow Control Flow With Conditional Statements Recap: Control Flow with Conditional Statements

Aditya Gawade
Aditya Gawade
1,182 Points
Posted by Aditya Gawade
Aditya Gawade
1,182 Points

did not understand the question

What does the following statement evaluate to? (!true || !false) && (true && !false)

option : a. true b. false

2 Answers

Kristopher Wood
seal-mask
.a{fill-rule:evenodd;}techdegree
Kristopher Wood
iOS Development Techdegree Student 5,552 Points
Kristopher Wood
.a{fill-rule:evenodd;}techdegree
Kristopher Wood
iOS Development Techdegree Student 5,552 Points

(!true || !false) = (not true or not false) = (false or true) = true && (and) (true && !false) = (true and not false) = (true and true) = true true and true = true

(A) True

Fernando Boza
Fernando Boza
25,384 Points
Fernando Boza
Fernando Boza
25,384 Points

If you break it down, remember the ! sign is the oppsisite so !true is false and !false is true. The || sign means OR and the && defines AND.

So if you look at it again ... (!true || !false) && (true && !false) = false or true AND true and true. Which would seem to be (B) False