Next Hash Hash Hash 9

Early sightings

  • Lisp "property lists" (1960ish)

  • SNOBOL "tables" (1965ish)

  • awk "associative arrays" (Unix, 1977)

    • This is the earliest implementation that I know used hash tables

  • REXX "stem variables" (OS/370, 1979)

    • These were not actually very good

  • Perl / Python (1987–1990ish)


Next 9