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
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ReferenceTravel

LanguageValues and typesStandard typesTravel

IataAirport

On this page

An airport's three-letter code, as tickets print it: LHR.

Use it for flights and passengers. For air traffic control's four-letter code, use IcaoAirport. For shipping ports, use UnLocode.

Shape

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

Example

example
IataAirport("LHR")

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

text.parse(raw, as: IataAirport) reads one from text that comes from outside. Text that isn't one at all fails malformed, such as lhr, LH or EGLL.

Good to know

  • == tells you whether two are the same. < and list.sort_by don't take it.

In JSON

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

json
"LHR""JFK"

Details

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

IataAirport is in the group Travel, 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: LHR and JFK.

How it is stored

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

How it is shown to people

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

With locale: Locale.en_gb:

Value Shown
LHR LHR
JFK JFK

Operations

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

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