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iOS Swift 2.0 Basics Swift Operators Working With Operators: Part 2

Posted by Thomas Hoffmann
Thomas Hoffmann
903 Points

Task 2: I can't figure out how to code it.

Hi there again, it seems I am having trouble with this lesson

I have been trying to figure out a code to explain that isWinner should not be 10 but I can't seem to figure out the answer and its frustrating me. Every time I am told I can't assign the string to a Int value.

let isWinner = totalScore let totalScore !=10

operators2.swift 
// Enter your code below

var initialScore = 8
let totalScore = ++initialScore

let isWinner =

2 Answers

Jason Anders
MOD
Jason Anders
Treehouse Moderator 145,858 Points
Jason Anders
Jason Anders
Treehouse Moderator 145,858 Points

Thomas, you've almost got it, you just have some extra code where you shouldn't.

You will be assigning the Boolean result to the constant isWinner, so your part is correct. The second part (after the = sign) doesn't get any type of var or let. It is a Boolean comparison that will evaluate to True or False.

So, what you need is there, just delete the extras.

let isWinner = totalScore != 10

Here totalScore != is asking if the Total Score does not equal 10. In this case it doesn't, so it will return True.

Make sense? :dizzy:

Thomas Hoffmann
Thomas Hoffmann
903 Points

Thank you Jason, your explanation helps me better understand the logic behind the code. Like I wrote earlier, I should think more straight forward in these situations.

Tobias Helmrich
Tobias Helmrich
31,602 Points
Tobias Helmrich
Tobias Helmrich
31,602 Points

Hey Thomas,

you almost got it right and actually you already have the solution if you remove some code.

let isWinner = totalScore let totalScore !=10

Here you just have to remove totalScore let so you have

let isWinner = totalScore != 10

which should work. You just have to assign the result of the comparison between totalScore and 10 with the inequality operator to the isWinner constant.

Also note that the increment and decrement operators ++ and -- will be removed in Swift 3 so make sure to use += and -= in the future.

I hope that helps! :)

Thomas Hoffmann
Thomas Hoffmann
903 Points

Hi Tobias,

Thank you very much, looks like I tend to overcomplicate things... I guess Swift is simpler than I tend to make it.

Have a great day!