List Commands Library for 50g

[DavidM]

Although I'm still calling this a "development" release, it's really more like a beta. It feels like the command set has stabilized, and as far as I'm aware everything is fully functional in this release. Please beat on it as much as you like and let me know if anything misbehaves or doesn't work as expected.

Thanks to everyone who has participated with this! Hopefully the result is a useful collection of tools to extend the list processing functionality of the 49-50 systems.

Edit: The attachment has been deleted; see the first post in this thread for the latest version.

ListExt Release Notes

Version 0.11.0d
2017-07-22

- Added new command: I→NL
- Updated DOCOMB and DOPERM to make non-selected elements for the current combination available in local variable CRMNT.
- Changed behavior of DOCOMB and DOPERM so that the standard user stack is available to the user program.
- Fixed bug in LRCL to correctly handle local variables.
- Dropped the LV→I command and incorporated its functionality into NL→I.
- NL→I now includes all pre-radix digits when building the final integer result.
- Updated command description for NL→I to include information about sign treatment.
- Updated and fixed a several typos in the command descriptions.

COMMAND SUMMARY

DOCOMB - feeds indicated combinations of a list to a user-supplied program
DOPERM - feeds indicated permutations of a list to a user-supplied program
LCLLT - collates a list of sublists
LCNT - counts objects in a list
LDDUP - removes duplicates from a list
LDST - distributes list items into sublists (reciprocal of LCLLT)
LEQ - checks list items to see if any do not match
LGRP - replaces repeated elements with a single instance
LHDTL - retrieves the first element in a list while leaving the rest on the stack
LMRPT - repeats list contents as indicated by count
LNDUP - creates a list by repeating an object as indicated by count
LPOS - returns a list of all positions of an object in a list
LPOSL - returns a list of all positions of an object in a list or its sublists
LPROD - ΠLIST that also accepts lists with 0 or 1 element
LRCL - recalls objects identified by variables in a list
LREPL - replaces list elements with a substitute object as indicated
LRLL - rolls the list (equivalent to 1 LROT)
LRLLD - "roll down" the list (equivalent to -1 LROT)
LROT - rotates list elements left or right as indicated by count
LRPCT - list with LGRP elements and another list of the count of each element
LSDIV - subdivides a list into <count> sublists
LSEQ - creates a list of <count> integers as a sequence from 1..<count>
LSEQR - creates a list of integers for the range specified
LSHF - shuffles the contents of a list
LSPLT - splits a list as indicated into two sublists
LSUM - ΣLIST that also accepts lists with 0 or 1 element
LSWP - swaps the positions of two list elements
LXIL - explodes inner sublists into individual elements (non-recursive)
LXILR - recursive version of LXIL
RPTCHR - creates a string of repeated characters
I→NL - converts an integer to a list of numbers
NL→I - converts a list of numbers to an integer
S→NL - converts a string to a list of numbers
NL→S - converts a list of numbers to a string
S→SL - converts a string to a list of characters
SL→S - converts a list of characters to a string