Bearing

A compass direction, degrees clockwise from true north, from 0 to 360: 247.5, shown 247.5°.

Geospatial; ordered; since Jadpo 0.1.0.

Make one

It is a Decimal with bounds of its own: build one as you build a Decimal, and a value outside its bounds breaks min or max.

text.parse(raw, as: Bearing) reads one from its text; text that isn't one at all fails malformed, such as 90°, N or 1.5rad.

This operation gives one: geo.bearing.

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.

It is stored in one column named for the field, of type numeric. 247.5 is stored as 247.5.

Shown to people

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

With locale: Locale.en_gb:

Operations

• geo.bearing(from: Point, to: Point) -> Bearing: The direction the geodesic leaves from in, in degrees clockwise from true north, at least 0 and below 360, to 9 places. Two equal points have none: the call fails with same_point, which its attempt maps.

Like every standard type, it also has the contract's own operations: text.parse, text.from, text.format, json.read, json.write and ==. It is ordered, so < and sorting take it. Every standard type meets one contract says how they work.