newRPL: Making RPL more readable

[compsystems]

Hello,

1: coding on hp48/ 50 I always had problems to differentiate a variable from an algebraic expression.

X ^ 1 -> X is an algebraic expression and not a variable

I propose IDENTIFIER NAMES between the containers '' (39 ASCII)
AND ALGEBRAIC EXPRESSIONS between the containers ´´ (180 ASCII)

PHP Code:

{ 'X' 'Y'  'Z'  'W' } PURGE
´Y´ 'X' STO
´Y^2´ 'Z' STO
« 1 2 + » 'W' STO

'X' TYPE @ DOM_IDENTIFIER
X TYPE @ DOM_ALGEXPR
'X' RCL TYPE @ DOM_ALGEXPR

'Z' TYPE @ DOM_IDENTIFIER
Z TYPE @ DOM_ALGEXPR


'W' TYPE @ DOM_IDENTIFIER
'W' RCL TYPE @ DOM_PROGRAM 


2: Another problem is that the variables within a list when evaluated, if they contain the container '' should be left as is

A trick to keep it is labeling it

PHP Code:

CLEAR
{ 'X' 'Y'  } PURGE
Y 'X' STO
{ X } EVAL     @ 'Y' OK
{ 'X' } EVAL   @ 'Y' =(, 'X' =)
{ ::'X' } EVAL @  ::'X' OK
{ ::'X' } EVAL DTAG @ 'X' OK

« 1 2 + » 'W' STO
{ W } EVAL     @ 3 OK
{ 'W' } EVAL    @ 'W' OK

´Y^2´ 'Z' STO
{ Z } EVAL     @ ´Y^2´ OK
{ 'Z' } EVAL     @  'Z' OK

{ ´Y^2´  } EVAL    @ ´Y^2´ OK
4 'Y' STO
{ ´Y^2´  } EVAL  @ ´Y^2´ OK
{ ´Y^2´ EVAL } EVAL  @ 16 OK 


3: So that the codes are auto-documented using keywords, for several constants

PHP Code:

TRUE EVAL @ -> 1
FALSE EVAL @ -> 0

DOM_REAL EVAL -> 1
DOM_INTEGER EVAL ->  1.2
DOM_BININTEGER EVAL ->  1.3
DOM_COMPLEX EVAL->  1.4
DOM_STRING EVAL -> 2
DOM_LIST EVAL -> 3
DOM_MATRIX EVAL -> 3.1
DOM_IDENTIFIER EVAL -> 4
DOM_ALGEXPR EVAL -> 5
DOM_UNIT EVAL -> 5.1
DOM_PROGRAM -> 6
DOM_DIR -> ...
... 


PHP Code:

IF 'W' RCL TYPE DOM_PROGRAM == THEN ... 


Instead of, that is not known that is #6

PHP Code:

IF 'W' RCL TYPE 6 == THEN ..