hp 28s - creating nested lists

[Christoph Giesselink]

(02-19-2015 12:13 AM)mbrethen Wrote:  Let me see if I understand this.

Code:

# C53Bh
SYSEVAL # 3ACB5h
SYSEVAL # 3EFFh
SYSEVAL

equivalent to:

Code:

\<< SWAP OVER 1. SWAP START SWAP OVER NEXT DROP \>>

...

No, this isn't equal.

Code:

#  C53Bh SYSEVAL = COERCE
# 3ACB5h SYSEVAL = NDUPN
#  3EFFh SYSEVAL = {}N

Stack diagrams from RPLMAN.DOC:

Code:

COERCE          ( % --> # )
NDUPN           ( ob #n --> ob ... ob #n )
{}N             ( obn ... ob1 #n --> {list} )

simply duplicates the object n-times and put the objects into a list object.

As entry into the SysRPL world you may begin reading the RPLMAN.DOC document, available as separate file or as part of the orginal HPTOOLS package.