Arrays
Arrays are the most common collection for storing a list of values. They can be mutable or immutable.
let myArray = [1, 2, 3] // immutable array, you cannot modify, add, or remove elements
let myArray: Array(Integer) = [1, 2, 3]
let myArray = Array(Integer) [1, 2, 3]
mutable myMutableArray = [1, 2, 3] // mutable array, you can modify, add, and remove elements
mutable myMutableArray: Array(Integer) = [1, 2, 3]
mutable myMutableArray = Array(Integer) [1, 2, 3]Adding and removing items
mutable users = ["Ana", "Bao"]
users.push("Cleo")
users.insert(1, "Dan")
users.delete(0)Access and update
let numbers = [10, 20, 30]
let first = numbers[0]
mutable scores = [100, 90, 80]
scores[1] = 95Iteration
let items = ["a", "b", "c"]
for items >> item {
console.log(item)
}
for items >> item, index {
console.log("{index}: {item}")
}Slicing and copying
let data = [1, 2, 3, 4, 5]
let middle = data[1..4] -- copies [2, 3, 4]