HP Forum Archive 21

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Prime: Placing more than 1 item on the RPN stack in a single program? Message #1 Posted by John Colvin on 18 Nov 2013, 8:37 p.m. I am trying to write a program that decomposes a list and places the elements on the stack in RPN mode. The RETURN command apparently can only place one item on the stack and then exits the program. Is there a way to put more than one item on the stack from within a single program?

Re: Prime: Placing more than 1 item on the RPN stack in a single program? Message #2 Posted by Helge Gabert on 18 Nov 2013, 8:46 p.m., in response to message #1 by John Colvin Currently . . . not to my knowledge. (That is only one of the reasons why I keep using the 50G for *real* work, and the HP Prime just for fun!)

Re: Prime: Placing more than 1 item on the RPN stack in a single program? Message #3 Posted by John Colvin on 18 Nov 2013, 9:26 p.m., in response to message #2 by Helge Gabert I was afraid of that. The limited functionality of RPN in the HP Prime has renewed my fondness for my old HP49G+.

Re: Prime: Placing more than 1 item on the RPN stack in a single program? Message #4 Posted by Joe Horn on 18 Nov 2013, 10:23 p.m., in response to message #1 by John Colvin Quote: Is there a way to put more than one item on the stack from within a single program? Yes and no. On separate stack levels: no. As a list containing multiple items: yes. Some of my programs return lists for exactly that reason: I want more than a single output. It's not what we REALLY want, but at least it works. Another option is for the program to store results in variables. Big upside: you can use them in further calculations with very few keystrokes (e.g. ALPHA A). Big downside: You don't see them immediately.

Re: Prime: Placing more than 1 item on the RPN stack in a single program? Message #5 Posted by Miguel Toro on 19 Nov 2013, 8:59 a.m., in response to message #4 by Joe Horn Hi, As I stated in similar post, it would be nice if at least 'OBJ->' were implemented in RPN entry. As it is now, you can compose a list (->LIST) but you cannot decompose it in RPN mode. Regards, Miguel

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