Array Updates - Swift Programming

Arrays keep ordered values and can be appended to or updated by index.

Change an ordered list

array_updates.swift

let firstScore = 
var scores = [firstScore, 10, 14]
scores.append(16)
scores[1] = scores[1] + 2

let total = scores[0] + scores[1] + scores[2] + scores[3]
print("scores=\(scores)")
print("total=\(total)")

let firstScore = 
var scores = [firstScore, 10, 14]
scores.append(16)
scores[1] = scores[1] + 2

let total = scores[0] + scores[1] + scores[2] + scores[3]
print("scores=\(scores)")
print("total=\(total)")

let firstScore = 
var scores = [firstScore, 10, 14]
scores.append(16)
scores[1] = scores[1] + 2

let total = scores[0] + scores[1] + scores[2] + scores[3]
print("scores=\(scores)")
print("total=\(total)")

arrays Use an array when order matters. `append` adds a new element, and subscript assignment changes an element at a known index.