I know that it is probably (a few years) too late for a proposal like
this, that is highly "invasive" wrt Perl's semantic, but here it is
anyway...
Cmd line switches are so useful and effective to quickly change the
behaviour of programs: IIRC tcl's syntax was inspired by them. But OTOH it
is too strict in this sense (again IIRC) and Perl's one is much nicer IMHO
(why else should I be programming in Perl?!?) however I wonder if in Perl6
cmd line like switches could be introduced for functions and operators in
a way not conflicting with "current" semantics and yielding yet MWTDI.
A wild guess suggests me that Perl6's ordered pairs may be a
powerful/promising resource in this sense.
Specifically I'd like to have the possibility of doing something like
this:
rename -v => 1, $orig, $new;
and this should provide a nice default '--verbose' message a la:
print "`$orig' => `$new'\n";
of course users should be allowed to fine tune the behaviour e.g. by means
of something like (please excuse any explicit ignorance of actual Perl6
proposed syntax):
rename.SWITCHES{-v} = sub {
my ($o, $n) = @_;
print "renaming `$o' to `$n'\n";
}
Michele
--
+++ wrote:
> Idiot.
top-poster
- Robin Chapman in sci.math,
"Re: This Week's Finds in Mathematical Physics (Week 204)"
