The single empty value returned by procedures.
Signature
Unit is represented by the payload-free Rust Value::Unit variant and spelled () in the language. A function returning Unit may end without a value or use ret;. Unit is not null, an absent field, or an optional value.
Examples
Return from a procedure
The procedure logs its work; its result is the empty value ().
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No output.
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Expected output
ready ()
Rust definition
Value::Unit; a Rust enum variant with no payload.