Editing APL (programming language) (section)

=== Compilation ===
[[Compiler|Compilation]] of APL has been the subject of research and experiment since the language first became available; the first compiler is considered to be the Burroughs APL-700<ref name="DriscollOrth">
{{cite journal |last1=Driscoll |first1=Graham C. Jr. |last2=Orth |first2=Donald L. |s2cid=2299699 |date=November 1986 |title=Compiling APL: The Yorktown APL Translator |journal=IBM Journal of Research and Development |volume=30 |issue=6 |pages=583–593 |doi=10.1147/rd.306.0583}}</ref> which was released around 1971.<ref>{{cite web |url=http://www.sigapl.org/APLChronology.php |title=Chronology of APL |website=www.sigapl.org| publisher=ACM |access-date=May 7, 2018}}</ref> In order to be able to compile APL, language limitations have to be imposed.<ref name="DriscollOrth"/><ref>
{{cite journal |last1=Wai-Mee |first1=Ching |s2cid=17306407 |date=November 1986 |title=Program Analysis and Code Generation in an APL/370 Compiler|journal=IBM Journal of Research and Development |volume=30 |issue=6 |pages=594–602 |doi=10.1147/rd.306.0594}}</ref> APEX is a research APL compiler which was written by [[Robert Bernecky]] and is available under the [[GNU General Public License]].<ref>{{cite web |title= The APEX Project |url= http://www.snakeisland.com/apexup.htm}}</ref>

The [[STSC]] APL Compiler is a hybrid of a bytecode optimiser and a compiler – it enables compilation of functions to [[machine code]] provided that its sub-functions and globals are [[Declaration (computer programming)|declared]], but the interpreter is still used as a [[runtime library]] and to execute functions which do not meet the compilation requirements.<ref>{{cite web |title= APL Compiler (message from Jim Weigang to the comp.lang.apl Newsgroup) |url= http://www.chilton.com/~jimw/aplcomp.html |date= Apr 5, 1994}}</ref>