NDLI: OOP vs. readability

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Volume XVII, Issue 6, Nov./Dec. 1997

Volume XVII, Issue 5, Sept./Oct. 1997

Volume XVII, Issue 4, July/Aug. 1997

Volume XVII, Issue 3, May/June 1997

Volume XVII, Issue 2, March/April 1997

Minutes of 3 December 1996 ASISWG/ASISRG meeting with Tri-Ada'96

Ada semantic interface specification (ASIS) frequently asked questions

A taxonomy of coordination mechanisms used by real-time processes

Parallel computing in Ada

OOP vs. readability

Ada in distributed systems

Volume XVII, Issue 1, Jan./Feb. 1997

OOP vs. readability

Content Provider	ACM Digital Library
Author	Carter, Jeffrey R.
Abstract	A previous paper discussed the relationship between the object-oriented-programming (OOP) feature known in Ada 95 as dispatching and Ada's expressed design goal of emphasizing ease of reading and understanding over ease of writing [1]. A comparison of Barnes' alert-system example [2] using Ada-95 dispatching and using Ada-83 composition showed that dispatching emphasized ease of writing over ease of reading, while composition emphasized ease of reading over ease of writing. This led to the conclusion that the goals of dispatching conflict with Ada's expressed design goals.Dispatching is half of OOP; the other half is inheritance, correctly called type extension in Ada 95. This paper examines the relationship between inheritance and Ada's expressed design goal of emphasizing ease of reading and understanding over ease of writing.Object-oriented design (OOD), as introduced by Booch [3], emphasizes the software-engineering principles of locality, encapsulation, and information hiding. Ada 83 supports such OOD well; using OOD and Ada results in easy-to-read programs that exhibit low coupling and high cohesion. OOD is independent of OOP: Fully object-oriented designs may be implemented using composition methods familiar to Ada-83 users without any need for OOP features (inheritance and dispatching). OOP features may likewise be used without OOD.
Starting Page	63
Ending Page	66
Page Count	4
File Format	PDF
ISSN	10943641
DOI	10.1145/249100.249114
Journal	ACM SIGAda Ada Letters (ALET)
Volume Number	XVII
Issue Number	2
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	1989-04-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article

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