Assignment operators - Swift Tutorial

Assignment Operator (=): The assignment operator is used to assign a value to a variable or constant. For example:

let x = 10 
var y = 5 
y = x // y is now 10

Compound Assignment Operators: Compound assignment operators combine assignment with another operation. They perform the operation and assign the result back to the variable or constant. Some examples include:

• Addition Assignment (+=):

var a = 5 
a += 3 // equivalent to a = a + 3, a is now 8

• Subtraction Assignment (-=):

var b = 7 
b -= 4 // equivalent to b = b - 4, b is now 3

• Multiplication Assignment (*=):

var c = 2 
c *= 5 // equivalent to c = c * 5, c is now 10

• Division Assignment (/=):

var d = 12 
d /= 3 // equivalent to d = d / 3, d is now 4

• Remainder Assignment (%=):

var e = 10 
e %= 3 // equivalent to e = e % 3, e is now 1

Nil-Coalescing Assignment Operator (??=): The nil-coalescing assignment operator assigns a value to a variable only if it is currently nil. It provides a convenient way to assign a default value when a variable is nil. Here’s an example:

var name: String? 
name ??= "John" // assigns "John" to name if it is nil

These are some of the assignment operators available in Swift. They allow you to assign values, perform operations, and update variables or constants in a concise manner.

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