neg.dots
Purpose
Since there is no way to set a dot’s value to a negative number directly, this librairy is a shortcut to changes the value of a dot to its opposite.
Usage
T
L+R
B
Parameters
L
,R
,T
orB
: The entry for the dot can be any of the 4 directions.R
,L
,B
orT
: And the dot will go out to the opposite direction, continuing its way.
Example
%!neg.dots n
.--#42--n--$#--\
|
n
/--$#-& |
n $
| #
\-#$--n---/
Output
-42
42
-42
42
Source
The source code is availaible here . If something doesn’t work, do not hesitate to open an issue.