Zig Academy · Lesson

Error Sets and the !T Union

Errors as first-class values.

Errors Are Values

In Zig there are no exceptions. An error is just an ordinary value your function can return, so failure is visible in the code.

An error set is a named group of possible errors. You list the variants much like an enum of things that can go wrong.

const FileError = error{
    NotFound,
    PermissionDenied,
};