RPL/2

[JKB]

Some news.

For a long time, it was possible to write libraries to add new functionalities into RPL/2. In 4.1.27, it is possible to manage new types in these libraries.

RPL/2 is now shipped with two libraries. The first one motif$ is used to create graphical applications. The second one, sets$, is able to work on sets and defines a new type with ([ ]) delimiters and five new instructions :
- complement
- union
- intersection
- s->l (set to list)
- l->s (list to set)

Example :

Code:


#!/usr/local/bin/rpl -sp -m sets.rplso

TEST
<<
        externals disp

        ([ 1 2 3 4 5 6 7 8 9 ]) ([ 3 6 8 ]) complement disp
        ([ 1 2 8 9 ]) ([ 3 6 8 ]) union disp
        ([ 1 2 8 9 ]) ([ 3 6 ]) intersection disp

        ([ 1 2 3 0 ]) disp
        ([ 1 2 3 5 ]) s->l disp
        { 1 2 2 5 1 2 } l->s disp

        clmf
>>

that returns :

Code:


schroedinger:[~/cvs/rpl/modules/sets] > ./example.rpl 
+++RPL/2 (R) version 4.1.27 (Lundi 31/07/2017, 14:02:25 CEST)
+++Copyright (C) 1989 à 2016, 2017 BERTRAND Joël

Sets library V1R1 for RPL/2 (C) 2017 BERTRAND Joel
Sets library loaded.

{ "complement"
  "intersection"
  "l->s"
  "s->l"
  "union" }
([ 1 2 4 5 7 9 ])
([ 1 2 3 6 8 9 ])
([ ])
([ 0 1 2 3 ])
{ 1
  2
  3
  5 }
([ 1 2 5 ])

Sets library unloaded.

schroedinger:[~/cvs/rpl/modules/sets] >

This new functionality will be available the 1st of august 2017 in daily snapshot.

Best regards,

JKB