SwiftLet #03: Var

Var is the keyword to define a variable.

var variable: String

variable = "👋"

print(variable) // 👋

variable = "😱"

print(variable) // 😱

Example 1

Some types allow for the use of different operators! So far we have only used the assignment operator (=). For this example we will try using the addition operator (+).

var variable: String

variable = "👋"

print(variable) // 👋

variable = variable + "😱"

print(variable) // 👋😱

Example 2

var variable: [String]

variable = ["👋"]

print(variable) // ["👋"]

variable.append("🤪")

print(variable) // ["👋", "🤪"]