I either don´t like prototyping in perl,
but I hate user who don´t read what my methode or function want much more then
prototypes. (This error cost me SO much time... every day there calls
somebody... "your sub don´t work"... only because he/she passes $ $ instead of
$ $ $.)
(I don´t like writing input checks for every methode, too^^)
Hope to see c++/java like polymorphism some day in perl.
"John W. Krahn" <[EMAIL PROTECTED]> hat am 10. Oktober 2008 um 12:18
geschrieben:
> Deviloper wrote:
> > Hi there,
>
> Hello,
>
> > have a look at this example:
> > ########################################################
> > #!/usr/local/bin/perl
> > use strict;
> > use warnings;
> >
> > my $a_hash = { hund => "Dogge",
> > katze => "Perser",
> > obst => "Banane"
> > };
> >
> > sub test($){
>
> You really shouldn't use prototypes in perl:
>
> http://groups.google.com/group/comp.lang.perl.modules/browse_frm/thread/4958701f6b5155a3/84484de5eb01085b
>
>
> > my $x = shift;
> >
> > print $x->{katze}; # Is this the same
> > print $$x{"katze"}; # as this?
> > }
> >
> > test($a_hash);
> > ######################################################
> >
> > Do the both "print" lines the same thing
> > or do they only result in the same thing?
>
> They are both the same:
>
> perldoc perlreftut
> perldoc perlref
> perldoc perllol
>
> See also the section "CAVEAT ON PRECEDENCE" in:
>
> perldoc perldsc
>
>
>
>
> John
> --
> Perl isn't a toolbox, but a small machine shop where you
> can special-order certain sorts of tools at low cost and
> in short order. -- Larry Wall
>
> --
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
> http://learn.perl.org/
>
>
