April 2017
Intermediate to advanced
316 pages
9h 33m
English
Content preview from Swift Functional Programming - Second Edition
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Events
An event represents the fact that something has happened. An event might represent the press of a button, data received from an API, the occurrence of an error, or the completion of an async operation. In short, a source generates the events and sends them over a signal to any number of observers.
Event is an enumeration type representing either a value or one of three events (failed, completed, and interrupted).
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