Basic Types in Swift
From the Swift cheat sheet · Getting Started · verified Jul 2026
Basic Types
Swift fundamental data types
swift
// Numbers
let integer: Int = 42
let double: Double = 3.14159
let float: Float = 3.14
// Strings and Characters
let string: String = "Hello, Swift"
let character: Character = "A"
let multiline = """
This is a
multiline string
"""
// Booleans
let isTrue: Bool = true
let isFalse = false
// Tuples
let coordinates = (x: 10, y: 20)
let (x, y) = coordinates💡 Int is 64-bit on 64-bit platforms, 32-bit on 32-bit platforms
⚡ String interpolation with \() is more efficient than concatenation
📌 Tuples are useful for returning multiple values from functions
🟢 Use type aliases to make complex types more readable
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