MapTile

A web map tile on OpenStreetMap's XYZ scheme: a zoom from 0 to 30 and a column and row each below 2 to the zoom, shown 10/511/340.

Geospatial; not ordered; since Jadpo 0.1.0.

Make one

Build one from its fields, MapTile { zoom: ... x: ... y: ... }.

Its parts keep these rules; a value that breaks one fails with the rule's name:

• within_zoom: x and y are each below 2 to the zoom

Fields

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 parts.

It is stored in 3 columns, each named for the field, _ and its suffix. This is {"zoom":10,"x":511,"y":340}:

Shown to people

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

With locale: Locale.en_gb:

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.