BloodType

A person's blood group, ABO and RhD, written O-: health data.

Health; not ordered; since Jadpo 0.1.0.

Make one

Pick one of its variants, BloodType.a_positive.

text.parse(raw, as: BloodType) reads one from its text; text that isn't one at all fails malformed, such as O pos, 0+ or O.

Variants

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 text. O- is stored as 'O-'.

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.