The question can easily be misunderstood, but my best guess is you want the user to choose what is executed. This means it is a method they name, not a module which has any number of methods including none. It is advisable to "use strict" in perl programs, so to translate data into a perl identifier, you need a dispatcher, e.g.:
use Try::Tiny;
while (my @parsed = &parseInput) {
    &dispatch(@parsed);
}

sub parseInput {
    my $inp = <>;
    chomp $inp;
    my @parsed = split $inp;
    return () if $parsed[0] eq `q`;
    return @parsed;
}

sub dispatch {
    my $cmd = shift;
    try { eval( '&' . $cmd . '(' . join ',', @_ . ');' ); }
    catch { print STDERR "Unrecognised command $cmd\n"; }
    # the above is a non-GUI example which would need adaptation      
+                                                        
}

# and add a sub xxx for each command xxx

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In reply to Re: Custom Arguements by anonymized user 468275
in thread Custom Arguements by Ghosty

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