July 2018
Beginner to intermediate
668 pages
16h 29m
English
Content preview from Delphi Cookbook - Third Edition
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Decoupling your code using a cross-platform publish/subscribe mechanism
The publish/subscribe pattern, also known as the Observer pattern, is a very popular design pattern. It comes under a lot of different names, but the final scope is always the same alert when something interesting happens to it. In this recipe, we'll see a utilization of the TMessageManager class, which is the publish/subscribe mechanism implemented in the System.Messaging.pas unit.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.