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Examples of event handling in APL2

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Alan GrahamAuthors Info & Claims

APL '83: Proceedings of the international conference on APL

Pages 121 - 127

https://doi.org/10.1145/800062.801206

Published: 01 March 1983 Publication History

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Abstract

Event handling is a feature that has recently been added to many APL systems. IBM's VSAPL release 4.0 and APL2 include a dyadic system function @@@@EA (Execute Alternate) which provides a simple event handling facility. This dyadic function can easily be simulated using the event handling facilities offered by other vendors. Event handling provides a significant new direction in capability to APL. Some applications that are inconvenient or impractical are easily accomplished using event handling. The examples given show some novel uses that may not be obvious on first introduction to @@@@EA. Although the examples given here are specific to APL2 the ideas behind them may be used on any APL system with sufficiently powerful event handling.

References

[1]

Berry, Paul; "Sharp APL Reference Manual", I. P. Sharp Associates, Inc., March 1979.

Google Scholar

[2]

Gilmore, John C.; Thomas H. Puckett; "A Latent-Expression Exception-Handling System", APL79, 244-248.

Digital Library

Google Scholar

[3]

Marcum, Alan M; "Secure Application Environments in APL\3000", APL79, 257-263.

Digital Library

Google Scholar

[4]

Multach, Jeffrey; "Conversion of Numeric Input", APL Quote Quad, December 1980, 16.

Google Scholar

[5]

Ruehr, Karl F; "A Survey of Extensions to APL", APL82, 300-301.

Digital Library

Google Scholar

[6]

Samson, Denis; Yves Ouellet; "Convivial Error Recovery", APL81, 271-279.

Digital Library

Google Scholar

Cited By

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Lucas J(1986)Array oriented exception handlingProceedings of the international conference on APL: APL and the future10.1145/17701.255318(1-4)Online publication date: 1-Jun-1986
https://dl.acm.org/doi/10.1145/17701.255318
Lucas J(1985)Array oriented exception handlingACM SIGAPL APL Quote Quad10.1145/255315.25531815:4(1-4)Online publication date: 12-May-1985
https://dl.acm.org/doi/10.1145/255315.255318
Naugle RSchlam JKallin S(1984)Polyvalent functions, operators, strand notation and their precedenceProceedings of the international conference on APL10.1145/800058.801106(247-254)Online publication date: 11-Jun-1984
https://dl.acm.org/doi/10.1145/800058.801106
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Index Terms

Examples of event handling in APL2
1. Software and its engineering
  1. Software notations and tools
    1. General programming languages
      1. Language features
        Control structures
      2. Language types

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Information & Contributors

Information

Published In

APL '83: Proceedings of the international conference on APL

April 1983

298 pages

ISBN:0897910958

DOI:10.1145/800062

Chairman:
Tom Puckett,
Editors:
Laurie A. Russell,
David M. Weintraub

ACM SIGAPL APL Quote Quad Volume 13, Issue 3
March 1983
276 pages
ISSN:0163-6006
DOI:10.1145/390005
Editors:
Laurie A. Russell,
David M. Weintraub
Issue’s Table of Contents

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Association for Computing Machinery

New York, NY, United States

Publication History

Published: 01 March 1983

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Cited By

View all

Lucas J(1986)Array oriented exception handlingProceedings of the international conference on APL: APL and the future10.1145/17701.255318(1-4)Online publication date: 1-Jun-1986
https://dl.acm.org/doi/10.1145/17701.255318
Lucas J(1985)Array oriented exception handlingACM SIGAPL APL Quote Quad10.1145/255315.25531815:4(1-4)Online publication date: 12-May-1985
https://dl.acm.org/doi/10.1145/255315.255318
Naugle RSchlam JKallin S(1984)Polyvalent functions, operators, strand notation and their precedenceProceedings of the international conference on APL10.1145/800058.801106(247-254)Online publication date: 11-Jun-1984
https://dl.acm.org/doi/10.1145/800058.801106
Naugle RSchlam J(1984)Polyvalent functions, operators, strand notation and their precedenceACM SIGAPL APL Quote Quad10.1145/384283.80110614:4(247-254)Online publication date: 1-Jun-1984
https://dl.acm.org/doi/10.1145/384283.801106

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