added to System/Interpreter/Requests - J Wiki
https://code.jsoftware.com/wiki/System/Interpreter/Requests Is this something you see as important to do soon, or should I use my workaround. Am I right in seeing 4!:4 as not used other than finding one's own script directory? On Friday, August 24, 2018, 3:04:10 p.m. EDT, Henry Rich <[email protected]> wrote: Left arg to 0!:n is a good idea. I think we should have better support for preprocessing scripts. Put it on the wishlist. Henry Rich On 8/24/2018 2:57 PM, 'Pascal Jasmin' via Programming wrote: > Rewriting scripts and then invoking them with 0!:0 noun (instead of file) has > the disadvantage of "breaking" 4!:4. If 4!:4 is ever used on a definition > from the file, it will report _1 (definition not from a script). This > applies to definitions inside the original file, often used to find the > directory of the program, and used to load related files and data. > The perfect solution is to add an optional left argument to 0!:n noun which > would be the filename returned by 4!;4 for definitions inside that noun. > A solution I can do myself, applies if the only real use for 4!:4 is in fact > to find "MYFILE" in a script. > The solution is to replace in the file all top level instances of lines > starting with (space intollerant) > MYDIR =:MYFILE =: (NB. not sure if this is needed, as the file is usually > obtained just to get MYDIR) > with a hardcoded string derived from what the x argument (MYFILE) to 0!:n > should be. > If this function over-rode the load command, then 4!;4 would return empty for > most definitions, which is only a problem if 4!:4 is ever used for anything > other than on a variable within its own script . > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm --- This email has been checked for viruses by AVG. https://www.avg.com ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
