Zig Academy · Lesson

Tagged Unions and switch

Pattern-match over union variants.

Remembering the Variant

A plain union forgets which field is active. A tagged union pairs the value with an enum tag that records the current variant.

You write union(enum) to let Zig generate a matching tag automatically, one tag name per field.

const Value = union(enum) { int: i64, text: []const u8 };