Arrays have fixed size, while slices are dynamic:
// Array - fixed size
var arr [5]int = [5]int{1, 2, 3, 4, 5}
// Slice - dynamic size
var slice []int = []int{1, 2, 3, 4, 5}
slice = append(slice, 6) // Can grow
// Creating slices
slice1 := make([]int, 5) // length 5, capacity 5
slice2 := make([]int, 5, 10) // length 5, capacity 10
Slices are more commonly used because of their flexibility and built-in functions like append().
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