October 2010
Beginner to intermediate
624 pages
24h 9m
English
Content preview from Making SoftwareBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 21. How Effective Is Modularization?
For more than 30 years, the concept of modularity has been seen as a key enabler for the development of large software systems. Modules help manage the complexity of development by breaking a system into units of software that individuals or teams can build [Dijkstra 1968], [Parnas 1972]. Modules enable the hiding of decisions behind an interface, allowing the individual or team responsible for a module to make progress independent of the decisions made by individuals and teams responsible for other modules [Parnas 1972]. Modules enable the enforcement of boundaries between parts of the software system, enabling the interchange of one part for another [Dijkstra 1968], minimizing the impact of changes made to a specific part of the system [Parnas 1972] and reducing the time to build the system when changes are made (separate compilation) [Liskov et al. 1977].
To help programmers maximize these benefits and more, most programming languages provide explicit support for expressing modules. For instance, many object-oriented programming languages, such as Java [Gosling et al. 1996], support a fine-grained notion of modularity through the definition and implementation of abstract data types. Support for coarser-grained modularity can sometimes be found in companion technologies. For instance, OSGi, a companion technology to Java, enables classes to be divided into bundles that are then restricted to communicating through ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.