Uuid

A UUID, written in lowercase hexadecimal with hyphens.

Software; not ordered; since Jadpo 0.1.0.

Make one

text.parse(raw, as: Uuid) reads one from its text; text that isn't one at all fails malformed, such as 0192f0c4 or not-a-uuid.

Text, JSON and storage

text.from writes its canonical text, the one form text.parse reads back. JSON sends its canonical text as a string.

It is stored in one column named for the field, of type uuid. 0192f0c4-9a1e-7b3c-8d2e-4f5a6b7c8d9e is stored as '0192f0c4-9a1e-7b3c-8d2e-4f5a6b7c8d9e'::uuid.

Shown to people

text.format(value, locale:) shows it to people in their locale.

With locale: Locale.en_gb:

Operations

It has the contract's own operations: text.parse, text.from, text.format, json.read, json.write and ==. It isn't ordered, so < and sorting don't take it. Every standard type meets one contract says how they work.