Arrays of objects

Authors:
Morten J. Kromberg
Affiliations:
Dyalog Ltd., Bramley, United Kingdom
Venue:
Proceedings of the 2007 symposium on Dynamic languages
Year:
2007

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OOPAL: integrating array programming in object-oriented programming

OOPSLA '03 Proceedings of the 18th annual ACM SIGPLAN conference on Object-oriented programing, systems, languages, and applications
A programming language

A programming language

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Abstract

This paper discusses key design decisions faced by a language design team while adding Object Oriented language features to Dyalog, a modern dialect of APL. Although classes and interfaces are first-class language elements in the new language, and arrays can both contain and be contained by objects, arrays are not objects. The use of object oriented features is optional, and users can elect to remain entirely in the functional and array paradigms of traditional APL. The choice of arrays as a "higher" level of organization allows APL's elegant notation for array manipulation to extend smoothly to arrays of objects.