Arrays & Sets
Learn how to use Swift arrays and sets to keep your data organized.
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Key Concepts
Review core concepts you need to learn to master this subject
Array
Initialize with Array Literal
Index
.count Property
.append() Method and += Operator
.insert() and .remove() Methods
Iterating Over an Array
Swift Sets
Array
Array
var scores = [Int]()
// The array is empty: []An array stores an ordered collection of values of the same data type.
Use the initializer syntax, [Type](), to create an empty array of a certain type.
Arrays
Lesson 1 of 2
What you'll create
Portfolio projects that showcase your new skills
How you'll master it
Stress-test your knowledge with quizzes that help commit syntax to memory
Arrays & Sets
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