Resources, insights, and stories

Learn how Swift's nil coalescing operator returns a default value when an optional is nil.

Learn how optional chaining safely accesses properties, methods, and subscripts when a value might be nil.

You've got an array full of data. You only want some of it. That's exactly what Swift's filter is for.

If you've ever written a for loop just to build a new array from an existing one, there's a better way.

Nina Kolari thought she was too old to learn coding. Six months later, she’d built 10 apps and won a hackathon. Here’s the story behind her transformation.

Full-time developer Michael Alls built software for others every day, until he decided to build something for his kids. Between his demanding job and family life, he learned iOS development to create Math Dash, a math practice app his children now use daily.