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iOS Swift Basics Swift Operators Working With Operators: Part 2

Posted by abdulmohsen abdullah
abdulmohsen abdullah
Courses Plus Student 352 Points

hello can someone help me please

i did my best

operators.swift 
// Enter your code below

var initialScore = 8
initialScore += 1
let isWinner = true
isWinner = !10

2 Answers

lvwdhydynw
lvwdhydynw
6,443 Points
lvwdhydynw
lvwdhydynw
6,443 Points

Hey,

1) At glance you should see that the last two lines will never work. Why? Well, "isWinner" is a constant. And what you can't do with a constant (but can with a variable)? :) 2) Your intention is fine, however, it's not finished. By "!10" you say it's not 10. But what it's not 10? Yes, you want to know whether initialScore is equal to 10 or not 3) EXTRA: Another solution (without not operator) is by using "<" operator :)

Stanley Miller
Stanley Miller
2,910 Points
Stanley Miller
Stanley Miller
2,910 Points

One solution is:

var initialScore = 8
initialScore += 1
let isWinner: Bool
if initialScore != 10 { isWinner = true } else { isWinner = false }

In order to mutate isWinner, you can't assign a value instead just assign a type. Then add an if/else statement to determine wether initialScore is equal to 10 or not. Hope that helps.