Modulinos: Difference between revisions

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=={{header|REXX}}==

<lang rexx>/*REXX program ~~to detect~~ whether or not it is a "scripted main" program.*/

<lang rexx>/*REXX program detects whether or not it is a "scripted main" program. */

parse source . howInvoked . /*ask REXX how we got invoked.*/

if howInvoked \== "COMMAND" then exit 0 /*if not a COMMAND, just exit.*/

/* ╔════════════════════════════════════════════════════════════╗

parse upper source . howInvoke .

║ At this point, we know that this program was invoked via ║

if howInvoke \== 'COMMAND' then do

/* ~~maybe~~ ~~say something here? */~~

║ the "command line" and not via another program. ║

╚════════════════════════════════════════════════════════════╝ */

return ''

end

say 'and away we go ···'</lang>

/* ┌────────────────────────────────────────────────┐

Note:   Actually another program can invoke the above (ma.rex) as a command:

│ At this point, we know that this program was │

│ invoked via the "command line" and not via │

│ another program. │

└────────────────────────────────────────────────┘ */

say 'and away we go ~~...~~'</lang>

Note:

Actually another program can invoke the above (ma.rex) as a command:

=={{header|Ruby}}==