Assignment (=, +=, -=, *=, /=)
Assignment operator (=)
var a = 10
var b = a
print("\(a), \(b)") // 10, 10
b = 15
print("\(a), \(b)") // 10, 15
Compound assignment operators
Addition (+=)
var a = 10
a += 5
print(a) // 15
Subtraction (-=)
var a = 10
a -= 5
print(a) // 5
Multiplication (*=)
var a = 10
a *= 5
print(a) // 50
Division (/=)
var a = 10
a /= 5
print(a) // 2
