Boah, I don't even know how long hash tables are in Lisp now. Hash tables became popular when the implementations used them for their symbol tables. The MIT Li

Boah, I don't even know how long hash tables are in Lisp now. Hash tables became popular when the implementations used them for their symbol tables. The MIT Lisp Machine from the late 70s implemented hash tables and used them widely: http://lispm.de/source/lispm-system-78-48/lispm2/hash.lisp http://lispm.de/source/lispm-system-78-48/lispm2/hash.lisp