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

BankAccount

On this page

A bank account to pay into or take from: a UK sort code and account number, an IBAN, or another country's account by its country, its bank's code where it has one, and its number. Shown masked to its number's last four. Personal data.

Money and banking; not ordered; since Jadpo 0.1.0.

Make one

Pick one of its variants and give its fields, BankAccount.uk { sort_code: ... account_number: ... }.

Variants

Variant Fields
uk sort_code: UkSortCode, account_number: UkAccountNumber
iban iban: Iban
other country: Country, bank_code: Text?, account_number: Text

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 variant's name, as tag, and the variant's fields.

JSON
{"tag":"uk","sort_code":"089999","account_number":"66374958"}
{"tag":"iban","iban":"GB29NWBK60161331926819"}
{"tag":"other","country":"US","bank_code":"021000021","account_number":"123456789"}
{"tag":"other","country":"NZ","bank_code":null,"account_number":"010202012345600"}

It is stored in 6 columns, each named for the field, _ and its suffix. This is {"tag":"other","country":"US","bank_code":"021000021","account_number":"123456789"}:

Column Type Holds
<field>_kind text 'other'
<field>_sort_code text NULL::text
<field>_account_number text '123456789'
<field>_iban text NULL::text
<field>_country text 'US'
<field>_bank_code text '021000021'

Shown to people

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

With locale: Locale.en_gb:

Value Shown
{"tag":"uk","sort_code":"089999","account_number":"66374958"} •••• 4958
{"tag":"iban","iban":"GB29NWBK60161331926819"} •••• 6819
{"tag":"other","country":"US","bank_code":"021000021","account_number":"123456789"} •••• 6789
{"tag":"other","country":"NZ","bank_code":null,"account_number":"010202012345600"} •••• 5600

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.

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