Smalltalk-80: the language and its implementation
Smalltalk-80: the language and its implementation
SMALLTALK-80: the interactive programming environment
SMALLTALK-80: the interactive programming environment
The C++ programming language
Object oriented programming: an evolutionary approach
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OOPLSA '86 Conference proceedings on Object-oriented programming systems, languages and applications
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OOPLSA '86 Conference proceedings on Object-oriented programming systems, languages and applications
CommonLoops: merging Lisp and object-oriented programming
OOPLSA '86 Conference proceedings on Object-oriented programming systems, languages and applications
Encapsulation and inheritance in object-oriented programming languages
OOPLSA '86 Conference proceedings on Object-oriented programming systems, languages and applications
Common LISP: the language
OOPWORK '86 Proceedings of the 1986 SIGPLAN workshop on Object-oriented programming
Communications of the ACM
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Lisp machine manual
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OOPSLA '88 Conference proceedings on Object-oriented programming systems, languages and applications
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LFP '88 Proceedings of the 1988 ACM conference on LISP and functional programming
The common Lisp object system metaobject kernel: a status report
LFP '88 Proceedings of the 1988 ACM conference on LISP and functional programming
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Proceedings of the 23rd ACM SIGPLAN conference on Object-oriented programming systems languages and applications
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CommonLoops is an object-oriented language embedded in Common Lisp. It is one of two such languages selected as starting points for the Common Lisp Object System (CLOS) which is currently being designed as a standard object-oriented extension to Common Lisp. This paper reports on experiences using the existing Portable CommonLoops (PCL) implementation of CommonLoops. The paper is divided into two parts: a report on the development of a window system application using the CommonLoops programming language, and a description of the implementation of another object-oriented language (CommonObjects) on top of the CommonLoops metaclass kernel, paralleling the two aspects of CommonLoops: the programming language and the metaclass kernel. Usage of the novel features in CommonLoops is measured quantitatively, and performance figures comparing CommonLoops, CommonObjects on CommonLoops, and the native Lisp implementation of CommonObjects are presented. The paper concludes with a discussion about the importance of quantitative assessment for programming language development.