Integers in Swift

Swift Integers ✨

When you work with whole numbers like 3, 42, or 1_000_000, you’re using integers in Swift (Int for short).

Integers represent whole numbers—no decimals.

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🔹 Creating Integers

Creating an integer looks just like creating a string:

let powerLevel = 9000
var flowerCount = 12

Swift integers can be very large and can also be negative.

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🔹 Readable Large Numbers

Big numbers are hard to read:

let petals = 100000000

Swift lets you use underscores to improve readability:

let petals = 100_000_000

Underscores are ignored by Swift—they’re just for humans.

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🔹 Integer Math

Swift supports basic arithmetic operators:

let baseScore = 10

let bonus = baseScore + 5
let damage = baseScore * 2
let penalty = baseScore - 3
let halfPower = baseScore / 2

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🔹 Updating Integers

Instead of rewriting values, you can use compound assignment operators:

var chakra = 10

chakra += 5
chakra *= 2
chakra -= 4
chakra /= 2

print(chakra)

These do the same thing, with less typing.

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🔹 Useful Integer Checks

Integers have helpful built-in methods, like checking multiples:

let petals = 120
print(petals.isMultiple(of: 3))

You can even call it directly:

print(120.isMultiple(of: 3))

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🌟 Wrap Up

Swift integers are powerful, safe, and easy to work with.