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1-10 of 16 reviews |
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New development of APL technology of modelling
Gusev D., Pospelov I. ACM SIGAPL APL Quote Quad 25(1): 68-73, 1994. Type: Article
Work on APL compilers has been going on for about 20 years. A number of papers have appeared in APL conference proceedings describing various techniques for compiling APL. An APL compiler may appear that removes all constraints imposed...
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Nov 1 1995 |
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VDE
Merrill J. ACM SIGAPL APL Quote Quad 25(1): 152-157, 1994. Type: Article
Merrill shares his experiences during the development and implementation of a custom database management system for a large bank. He combines inverted data files (in which table fields are stored as contiguous arrays) with APL function...
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Oct 1 1995 |
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The APL theory of human vision
Langlet G. ACM SIGAPL APL Quote Quad 25(1): 105-121, 1994. Type: Article
The “theory of human vision” of the title is essentially a theory of processing digital information, where processing includes both the storage and the transmission of information. All digital information can be rep...
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Sep 1 1995 |
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Restriction riddance: more power to parentheses
van Batenburg F. ACM SIGAPL APL Quote Quad 25(1): 220-224, 1994. Type: Article
The author points out that the history of APL is one of the removal of restrictions, citing as examples not having to declare the datatypes of language elements such as variables before use, not tying them to one datatype, and not havi...
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Aug 1 1995 |
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Extending APL2 to include program control structures
Selby D. ACM SIGAPL APL Quote Quad 24(1): 209-213, 1993. Type: Article
An intriguing rationale is provided for the introduction of new keywords that expedite more formal control structures in APL2. Formal definitions of the newly proposed keywords, such as if, then, else, do, and while, are ...
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Jan 1 1995 |
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Array morphology
Bernecky R. ACM SIGAPL APL Quote Quad 24(1): 6-16, 1993. Type: Article
Certain problems in compiling dynamic, array-oriented languages such as APL are addressed. Compiling APL is difficult because the language design favors consistent treatment of its high-level data structures, multidimensional arrays, o...
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Nov 1 1994 |
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From trees into boxes
Steinbrook D., McDonnell E. ACM SIGAPL APL Quote Quad 24(1): 267-276, 1993. Type: Article
J, a derivative of APL, has arrays (which it calls “boxes”) as its only data structure. In this progress report, the authors propose to add trees as a specialization of arrays. After reviewing previous approaches, w...
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Aug 1 1994 |
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Integrating APL with symbol manipulation, numerical software and graphics
Apiola H., Peltola P. ACM SIGAPL APL Quote Quad 20(4): 10-17, 1990. Type: Article
The authors’ Environment for Scientific Computing (ESC) contains the ingredients mentioned in the paper’s title. The basic system is the vector-manipulation language APL. Symbol manipulation was originally provided ...
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Aug 1 1992 |
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The A+ programming language, a different APL
Girardot J. ACM SIGAPL APL Quote Quad 20(4): 149-160, 1990. Type: Article
Many computer scientists dislike several things about APL. The best-known are lack of proper block and control structures, dynamic binding, and the lack of first-class functions. The author discusses each of these deficiencies and give...
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May 1 1992 |
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Design and implementation of the interface to compiled languages in APL*PLUS II
Wheeler J. ACM SIGAPL APL Quote Quad 20(4): 412-417, 1990. Type: Article
APL*PLUS II runs under the MS-DOS operating system (releases prior to 5.0) and links with pre-compiled modules written in C, FORTRAN, or Pascal. Wheeler gives a thorough description of the problems, issues, and tentative solutions to w...
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Feb 1 1992 |
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