method
Uuid.nil
Uuid.nil() -> string
Returns the nil UUID — 00000000-0000-0000-0000-000000000000 — the reserved all-zero value that means "no UUID". Use it as a sentinel for an unset or absent identity, and as the value Uuid.parse returns when it is handed something that is not a valid UUID. It is a well-formed UUID string, so it passes Uuid.is_valid; test for "no id" by comparing against Uuid.nil() explicitly.
Example
program Nil {
entry {
let none = Uuid.nil()
print(none) # 00000000-0000-0000-0000-000000000000
}
}