Editing POP-2 (section)

{{Short description|Programming language}}
{{For|other topics with similar names|POP2 (disambiguation){{!}}POP2}}
{{More footnotes needed|date=April 2010}}
{{Use dmy dates|date=April 2022}}
{{Use British English|date=March 2024}}
{{Infobox programming language
| name = POP-2
| logo = <!-- Filename only -->
| logo caption = 
| screenshot = <!-- Filename only -->
| screenshot caption = 
| sampleCode = 
| paradigm = [[Programming paradigm|Multi-paradigm]]: [[Structured programming|structured]], [[Reflective programming|reflective]], [[Procedural programming|procedural]]
| family = [[Lisp (programming language)|Lisp]]: POP
| designers = [[Robin Popplestone]]; [[Rod Burstall]], Steve Hardy; Robert Rae, Allan Ramsay
| developers = [[University of Edinburgh]]<br/>[[University of Sussex]]
| released = {{Start date and age|1970}}
| latest release version = 1975
| latest release date = {{Start date and age|1975}}
| typing = [[Dynamic typing|dynamic]]
| memory management = 
| scope = 
| programming language = [[Assembly language|assembly]]
| platform = [[Elliott Brothers (computer company)|Elliott 4130]], [[ICT 1900 series|ICT 1909]], [[BESM-6]], [[PDP-10]], [[PDP-11]]
| operating system = [[GEORGE (operating system)|George]], [[TOPS-10]], [[Unix]]
| license = [[Proprietary software|Proprietary]]
| file ext = 
| file format = <!-- or: | file formats = -->
| website = <!-- {{URL|}} -->
| implementations = WPOP
| dialects = POP-10
| influenced by = [[Lisp (programming language)|Lisp]], [[ALGOL 60]], [[COWSEL]] (renamed POP-1)
| influenced = [[POP-11]]
}}
'''POP-2''' (also called '''POP2''') is a [[programming language]] developed around 1970 from the earlier language POP-1 (developed by Robin Popplestone in 1968, originally named [[COWSEL]]) by [[Robin Popplestone]] and [[Rod Burstall]] at the [[University of Edinburgh]]. It drew roots from many sources: the languages [[Lisp (programming language)|Lisp]] and [[ALGOL 60]], and theoretical ideas from [[Peter J. Landin]]. It used an [[incremental compiler]], which gave it some of the flexibility of an [[interpreted language]], including allowing new function definitions at run time and modification of function definitions while a program runs (both of which are features of [[dynamic compilation]]), without the overhead of an interpreted language.<ref>{{cite book |last1=Burstall |first1=R.M. |author1-link=Rod Burstall |last2=Collins |first2=J.S. |last3=Popplestone |first3=R.J. |author3-link=Robin Popplestone |date=1968 |title=POP-2 Papers |url=http://bitsavers.informatik.uni-stuttgart.de/pdf/univOfEdinburgh/POP-2_Papers_1968.pdf |location=London |publisher=The Round Table}}</ref>