Shows a day- and night map of the planet

Building Blocks in the logical application domain

Ionic 3: Refresh on pulldown

Mobile apps typically provide a "refresh" key `F5` substitute by pulling down from the top of the page. Here is how to do this in Ionic 3.

Asynchronous events and $this

When the callback of an asynchronous function is executed there is no determined state of $this. So better supply a copy.

Mobile app: Reacting to events on the device

Reacting to events is a fundamental paradigm in any software architecture. Here is one approach how to do this with Cordova events in Ionic 3.