Editing Information Processing Language (section)

{{Short description|Early programming language for lists}}
{{More citations needed|date=January 2022}}
{{Infobox programming language
| name =  Information Processing Language (IPL)
| logo =
| paradigm = [[Assembly language|Assembly]]
| year =1956
| designer =[[Allen Newell]], [[Cliff Shaw]], [[Herbert A. Simon]]
| developer =Allen Newell, Cliff Shaw, Herbert A. Simon
| latest_release_version =IPL-V
| latest release date = <!-- {{start date and age|1959?|MM|DD|df=yes}} -->
| typing = 
| implementations =
| dialects =
| influenced_by =
| influenced = [[Lisp (programming language)|Lisp]]
| operating_system = [[Cross-platform]]: [[JOHNNIAC]], [[IBM 650]], [[IBM 704]], [[IBM 7090]]
| license =
| website =
| file_ext =
}}
'''Information Processing Language''' ('''IPL''') is a [[programming language]] created by [[Allen Newell]], [[Cliff Shaw]], and [[Herbert A. Simon]] at [[RAND Corporation]] and the [[Carnegie Institute of Technology]] about 1956.  Newell had the job of language specifier-application programmer, Shaw was the system programmer, and Simon had the job of application programmer-user.

IPL included features to facilitate AI programming, specifically [[Problem_solving|problem solving]]. such as lists, [[dynamic memory allocation]], [[data type]]s, [[Recursion (computer science)|recursion]], [[Subroutine|functions]] as arguments, generators, and [[cooperative multitasking]].  IPL also introduced the concepts of [[Symbolic_language_(programming)|symbol processing]] and list processing. Unfortunately, all of these innovations were cast in a difficult [[Assembly language|assembly-language]] style. Nontheless, IPL-V (the only public version of IPL) ran on many computers through the mid 1960s.