Rating

A rating on its own scale (schema.org): its value, from its worst to its best, the best above the worst. Shown 4.5/5.

Commerce and logistics; not ordered; since Jadpo 0.1.0.

Make one

Build one from its fields, Rating { value: ... best: ... worst: ... }.

Its parts keep these rules; a value that breaks one fails with the rule's name:

• best_above_worst: best > worst
• value_on_scale: worst <= value and value <= best

Fields

Text, JSON and storage

It has no single text form, so text.from and text.parse don't take it. JSON sends an object of its parts.

It is stored in 3 columns, each named for the field, _ and its suffix. This is {"value":"92","best":"100","worst":"0"}:

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.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.