Basic RPL question

[Han]

(02-29-2016 03:48 AM)Claudio L. Wrote:  

(02-29-2016 12:39 AM)wojtek Wrote:  Probably and almost sure because parsing the algebraics takes time. Calculator has to extract variables and operators, arrange them in a proper queue and perform.

I don't think so, algebraics are stored in RPN form, so evaluating simply means running the object as a stream of commands. There's no parsing at run time as far as I can remember.
The speed penalty may come from intermediate results being symbolic, perhaps, or some additional safety checks, I don't know.

I imagine that EVAL has quite a lot of overhead depending on the user's settings (undo settings, lastarg, etc).