You return the type directly. You can then declare things to be of this type. Eg, from the Zig docs, here's how to construct a generic List type (note the compt

You return the type directly. You can then declare things to be of this type. Eg, from the Zig docs, here's how to construct a generic List type (note the comptime declaration of the generic parameter): fn List(comptime T: type) type { return struct { items: []T, len: usize, }; } // The generic List data structure can be instantiated by passing in a type: var buffer: [10]i32 = undefined; var list = List(i32){ .items = &buffer, .len = 0, };