userRPL MAP command observations

[John Keith]

I did not know that MAP affected flags. Which ones?

MAP is also slow, even compared to DOLIST which isn't very fast. Here is a fast replacement for MAP using ListExt commands. It works for matrices or vectors but not for lists. It does not change the type of the array. The function can be a program, a list or a null-tagged object.

Code:


\<< SWAP OBJ\-> DUP \-> s
  \<< LPROD \->LIST SWAP LXEQ s \->ARRY
  \>>
\>>