Jadpo is experimental and not ready for production. These docs follow the compiler's main branch as of 1 Nov 2026. What's built · Install 0.2.0
jadpo
Reference: Standard library

Standard types

EpcRating

On this page

An energy performance certificate's band (the UK's EPC), written C.

Other with a published standard; not ordered; since Jadpo 0.1.0.

Make one

Pick one of its variants, EpcRating.a.

text.parse(raw, as: EpcRating) reads one from its text; text that isn't one at all fails malformed, such as H, A+ or 92.

Variants

Variant Written
a A
b B
c C
d D
e E
f F
g G

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.

Text JSON
A "A"
G "G"

It is stored in one column named for the field, of type text. G is stored as 'G'.

Shown to people

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

With locale: Locale.en_gb:

Value Shown
A A
G G

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.

Markdown for agents: /docs/types/type-epc-rating.md.Built from Jadpo main at e00e61f.