RPN/RPL is still relevant

[CR Haeger]

(04-10-2014 04:57 AM)Matt Agajanian Wrote:  

(04-10-2014 03:28 AM)davetheguru Wrote:  Since my first HP, an HP-45, with a stack and RPN, with X<>Y, RDN, etc., give me anything else and I'll throw it back asking "where's the ENTER button?" Parenthesis give me a headache.
RPN is SO efficient if you know how to use it and its associated tools.

You see my point! Any logic system (or even language) which is heavily dependent on extra symbols or punctuation so as to remove/avoid ambiguity is higly inefficient. That's what makes RPN such a model of simple elegance. Its straightforward syntax and structure completely fulfill the idea of flawless mathematical and logic methodologies.

Coming from a 15C a long time ago, I generally agree. "Efficiency" sometimes depends on the calculation(s) being performed. If you make a keying error during the RPN entry, you may be able to recover via an UNDO key if available. If not, you get to inefficiently reenter stuff.

I will say that algebraic entry (TI36x, HP Prime for me) can offer some visual feedback of the expression entered and some useful copy/pasting of prior expressions.

Best,
Carl