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APL2 was a significant re-implementation of APL by [[IBM]] which was developed from 1971 and first released in 1984. It provides many additions to the language, of which the most notable is nested (non-rectangular) array support. As of 2018 it is available for mainframe computers running z/OS or z/VM and workstations running AIX, Linux, Sun Solaris, and Microsoft Windows.
{{Infobox array language
| logo                    = [[File:Apl2cube.png]]
| array model            = [[nested array model|nested]]
| index origin            = 0 or 1
| function styles        = [[Defined function|defined]]
| numeric types          = [[complex]] floats
| unicode support        = no
| released                = 1984
| developer              = [[IBM]], Log-On Software
| latest release version  = 2.2.26 / 2019
| platforms              = IBM mainframes, x86, x86_64, IBM POWER
| operating systems      = z/OS, z/VM, AIX, Linux, Solaris, Windows
| license                = Free time-limited demo / Proprietary commercial software
| website                = [https://www.ibm.com/us-en/marketplace/apl2 IBM Marketplace]
| download                = [https://www.ibm.com/account/reg/us-en/signup?formid=urx-32206 APL2 for Multiplatforms]
| file ext                = .apl
| documentation          = [https://www-01.ibm.com/common/ssi/apilite?infotype=PM%20OR%20SA&lastdays=4055&appname=apl2&doctype=PL2GNRLI%20or%20PL2MFRAM%20or%20PL2WRKST IBM APL2 Literature]
| influenced by          = [[VS APL]]
| influenced              = [[NARS2000]], [[Dyalog APL]], [[GNU APL]], [[APLX]], [[ISO/IEC 13751:2001]]
}}
'''APL2''' was a significant re-implementation of APL by [[IBM]] which was developed from 1971 and first released in 1984. It provided many additions to the language, of which the most notable is nested (non-rectangular) array support. It was available for mainframe computers running z/OS or z/VM and workstations running AIX, Linux, Sun Solaris, and Microsoft Windows.


APL2's extensions to [[ISO 8485:1989]] were standardised as [[ISO-IEC-13751]]. No further core language features have been added, but it feature a number of powerful [[Quad names]].
APL2's extensions to [[ISO 8485:1989]] were standardised as [[ISO-IEC-13751]]. APL2 supports entry of [[complex number]]s in the following forms:
# Real and imaginary part separated by the letter <source lang=apl inline>J</source> and no spaces, e.g. <source lang=apl inline>0J1</source>
# Magnitude and angle in degrees separated by the letter <source lang=apl inline>D</source> and no spaces, e.g. <source lang=apl inline>1D90</source>
# Magnitude and angle in radians separated by the letter <source lang=apl inline>R</source> and no spaces, e.g. <source lang=apl inline>1R1.5708</source>
No further core language features have been added, with improvements instead consisting of powerful [[Quad name]]s.


The entire APL2 Products and Services Team was awarded the [[Iverson Award]] in 2007.
The entire APL2 Products and Services Team was awarded the [[Iverson Award]] in 2007.
On January 26, 2021, IBM announced that IBM APL2 would be removed from the market on April 7, 2021, while support would continue until September 15, 2021, without the possibility of extension. Customers were advised to use Log-On APL2, which comes with a support option, as a replacement product.<ref>[[IBM]]. [https://www-01.ibm.com/common/ssi/ShowDoc.wss?docURL=/common/ssi/rep_ca/6/877/ENUSZP21-0096/index.html&request_locale=en Software withdrawal and support discontinuance: IBM APL2, IBM APL2 Application Environment, and IBM Workstation APL2 for Multiplatforms]. IBM Europe Withdrawal Announcement ZP21-0096. January 26, 2021.</ref> Log-On APL2 will be distributed by the American-Israeli IBM business partner Log-On Software. It is advertised as fully compatible with APL2, and is scheduled for release on April 7, 2021.<ref>Mark Schora. [https://log-on.com/2021/01/26/log-on-software-announces-log-on-apl2/ Log-On Software Announces Log-On APL2]. Log-On Press Releases. Jan 26, 2021.</ref>
As of November 2021, Log-On has been able to build APL2 from IBM's sources, and is undergoing extensive testing. The next planned step is getting community and user feedback for  desired features, and publication of re-branded documentation.<ref>Werner Zülli. ''Log-On APL2: Plans and Questions''. GSE Herbsttagung 2021. [[APL Germany]].</ref>
== References ==
<references/>
{{APL dialects}}[[Category:IBM APL dialects]][[Category:Nested array languages]]

Revision as of 18:55, 23 November 2021

APL2 was a significant re-implementation of APL by IBM which was developed from 1971 and first released in 1984. It provided many additions to the language, of which the most notable is nested (non-rectangular) array support. It was available for mainframe computers running z/OS or z/VM and workstations running AIX, Linux, Sun Solaris, and Microsoft Windows.

APL2's extensions to ISO 8485:1989 were standardised as ISO-IEC-13751. APL2 supports entry of complex numbers in the following forms:

  1. Real and imaginary part separated by the letter J and no spaces, e.g. 0J1
  2. Magnitude and angle in degrees separated by the letter D and no spaces, e.g. 1D90
  3. Magnitude and angle in radians separated by the letter R and no spaces, e.g. 1R1.5708

No further core language features have been added, with improvements instead consisting of powerful Quad names.

The entire APL2 Products and Services Team was awarded the Iverson Award in 2007.

On January 26, 2021, IBM announced that IBM APL2 would be removed from the market on April 7, 2021, while support would continue until September 15, 2021, without the possibility of extension. Customers were advised to use Log-On APL2, which comes with a support option, as a replacement product.[1] Log-On APL2 will be distributed by the American-Israeli IBM business partner Log-On Software. It is advertised as fully compatible with APL2, and is scheduled for release on April 7, 2021.[2]

As of November 2021, Log-On has been able to build APL2 from IBM's sources, and is undergoing extensive testing. The next planned step is getting community and user feedback for desired features, and publication of re-branded documentation.[3]

References

  1. IBM. Software withdrawal and support discontinuance: IBM APL2, IBM APL2 Application Environment, and IBM Workstation APL2 for Multiplatforms. IBM Europe Withdrawal Announcement ZP21-0096. January 26, 2021.
  2. Mark Schora. Log-On Software Announces Log-On APL2. Log-On Press Releases. Jan 26, 2021.
  3. Werner Zülli. Log-On APL2: Plans and Questions. GSE Herbsttagung 2021. APL Germany.
APL dialects [edit]
Maintained APL+WinAPL2APL64APL\ivApletteAprilCo-dfnsDyalog APLDyalog APL Visiondzaima/APLGNU APLKapNARS2000Pometo
Historical A Programming LanguageA+ (A) ∙ APL#APL2CAPL\360APL/700APL\1130APL\3000APL.68000APL*PLUSAPL.jlAPL.SVAPLXExtended Dyalog APLIverson notationIVSYS/7090NARSngn/aplopenAPLOperators and FunctionsPATRowanSAXSHARP APLRationalized APLVisualAPL (APLNext) ∙ VS APLYork APL
Derivatives AHPLBQNCoSyELIGleeIIvyJJellyK (Goal, Klong, Q) ∙ KamilaLispLang5LilNialRADUiua
Overviews Comparison of APL dialectsTimeline of array languagesTimeline of influential array languagesFamily tree of array languages