Information Processing Language: Difference between revisions

Revision as of 19:30, 9 January 2023

Revision as of 02:18, 16 January 2023

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Several versions of IPL were created: IPL-I (never implemented), IPL-II (1957 for [[JOHNNIAC]]), IPL-III (existed briefly), IPL-IV, IPL-V (1958, for [[IBM 650]], [[IBM 704]], [[IBM 7090]], [[Philco model 212]], many others. Widely used). IPL-VI was a proposal for a IPL hardware.{{sfn|Shaw|Newell|Simon|1958}}{{sfn|Sammet|1969|p=389}}

A co-processor “IPL-VC” for the CDC 3600 at Argonne National Libraries was developed which could run IPL-V commands.{{sfn|Hodges|1964}}{{sfn|Sammet|1969|p=393–394}} It was used to implement another checker-playing program.{{sfn|Cowell|Reed|1965}}. This hardware implementation did not improve running times sufficiently to “compete favorably with a language more directly oriented to the structure of present-day machines”.{{sfn|Carson|Robinson|1966|p=5}}

IPL was soon displaced by [[Lisp (programming language)|Lisp]], which had much more powerful features, a simpler syntax, and the benefit of automatic [[garbage collection (computer science)|garbage collection]].