Can you list the main data types used in Swift?

In Swift language, there are several basic data types used for storing information:

• Int — integers (e.g., 42, -7).
• Double — double-precision floating-point numbers (e.g., 3.1415).
• Float — single-precision floating-point numbers.
• Bool — boolean values (true or false).
• String — text strings.
• Character — a single character.
• Optional — a type that can hold a value or nil.

Additionally, there are collections:

• Array — an ordered list of elements of the same type.
• Dictionary — a collection of key-value pairs.
• Set — an unordered collection of unique elements.

Example of variable declarations:

let age: Int = 30
let pi: Double = 3.14
let isActive: Bool = true
let name: String = "Ivan"
let optionalValue: Int? = nil