No, APL was neither Polish nor Reverse Polish; it was infix. However, there was no operator precedence.
BTW, be careful of the word "operator", because in APL it has a special meaning (see <https://en.wikipedia.org/wiki/APL_syntax_and_symbols#Functions_and_operators>) that would probably be described as "meta operator" in some other languages, e.g., "." (product), "/" ( reduce). Thus +/B Sum across B ∨/B Or across B A+.×B Matrix product of A and B A∨.∧B Logical matrix product of A and B -- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Discussion List [[email protected]] on behalf of Pierre Fichaud [[email protected]] Sent: Thursday, March 24, 2022 2:10 PM To: [email protected] Subject: Re: FORMAC was ABP At our college, we had an APL terminal. I wrote a couple of programs. A very powerful language and quite cryptic. Programs were coded in RPN, weren't they? PF. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
