Structs

A shape for your data

A PawWalk backend juggles walkers, dogs, bookings, GPS fixes. Each is a little bundle of related fields: a walker has a name and a price; a booking has a walker, a dog, and a time. In Go you describe that bundle with a struct — a named type made of fields.

If you did the iOS course, this is the same idea as Swift's struct Walker { ... }. Go's version is leaner: no class alternative to weigh it against, no inheritance, just fields and (next lesson) methods hung off them.