Now you know all the basic types in Swift, we can start to put them together using operators. Operators are those little mathematical symbols like +
and -
, and Swift has a huge range of them.
Here are a couple of test variables for us to work with:
let firstScore = 12
let secondScore = 4
We can add and subtract using +
and -
:
let total = firstScore + secondScore
let difference = firstScore - secondScore
And we can multiply and divide using *
and /
:
let product = firstScore * secondScore
let divided = firstScore / secondScore
Swift has a special operator for calculating remainders after division: %
. It calculates how many times one number can fit inside another, then sends back the value that’s left over.
For example, we set secondScore
to 4, so if we say 13 % secondScore
we’ll get back one, because 4 fits into 13 three times with remainder one:
let remainder = 13 % secondScore
SPONSORED Building and maintaining in-app subscription infrastructure is hard. Luckily there's a better way. With RevenueCat, you can implement subscriptions for your app in hours, not months, so you can get back to building your app.
Sponsor Hacking with Swift and reach the world's largest Swift community!
Link copied to your pasteboard.