errorset-tagged-union.zig

const Errors = error{
    hello,
    world,
};

// It's a tagged union, expect the tag is an error set
const ErrorUnion = union(Errors) {
    hello: u32,
    world: []const u8,
};

// To return an errorset tagged union, you have to construct it
pub fn main() ErrorUnion!void {
    return ErrorUnion{
        .world = "greetings",
    };
}