Jadpo is experimental and not ready for production. These docs follow the compiler's main branch as of 5 Nov 2026. What's built · Install 0.3.0
jadpo
ReferenceMoney and banking

LanguageValues and typesStandard typesMoney and banking

Iban

On this page

An international bank account number, with its check digits: GB29NWBK60161331926819.

Use it for bank accounts in countries that use IBANs. To hold any kind of account, use BankAccount, which can contain one.

Shape

One value, held as text in one set form, with no parts: MT84MALT011000012345MTLCAST001S.

Example

example
Iban("GB29NWBK60161331926819")

Iban(raw) checks the text, and text that isn't one breaks the format rule.

text.parse(raw, as: Iban) reads one from text that comes from outside. Text that isn't one at all fails malformed, such as GB29NWBK60161331926818, GB29 NWBK 6016 1331 9268 19 or gb29nwbk60161331926819.

Good to know

  • It has to be upper case with no spaces, so tidy what a person types before you build one.
  • text.format shows it in groups of four.
  • == tells you whether two are the same. < and list.sort_by don't take it.
  • A field that holds one counts as personal data (financial), so you don't mark it yourself.

In JSON

A string, in a request, a response or json.write:

json
"GB29NWBK60161331926819""DE89370400440532013000""FR1420041010050500013M02606"

Details

Text form, storage, how it is shown, and operations

Iban is in the group Money and banking, and has been in Jadpo since 0.1.0.

Text form

text.from writes one standard text form, the same form text.parse reads back: GB29NWBK60161331926819, DE89370400440532013000 and FR1420041010050500013M02606.

How it is stored

It is stored in one column named for the field, of type text. FR1420041010050500013M02606 is stored as 'FR1420041010050500013M02606'.

How it is shown to people

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

With locale: Locale.en_gb:

Value Shown
GB29NWBK60161331926819 GB29 NWBK 6016 1331 9268 19
DE89370400440532013000 DE89 3704 0044 0532 0130 00
FR1420041010050500013M02606 FR14 2004 1010 0505 0001 3M02 606
NO9386011117947 NO93 8601 1117 947
MT84MALT011000012345MTLCAST001S MT84 MALT 0110 0001 2345 MTLC AST0 01S

Operations

It also takes text.parse, text.from, text.format, json.read, json.write and ==. How every standard type behaves says how they work.

Related

Markdown for agents: /docs/types/type-iban.md.Built from Jadpo main at aee2e8f.