Re: Re: Defining Subroutines


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Re: Re: Defining Subroutines

by rir (Vicar)

on Oct 24, 2002 at 04:11 UTC ( #207621=note: print w/replies, xml )

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in reply to Re: Defining Subroutines
in thread Defining Subroutines

Not quite, using the ampersand causes the routine call to use the existing @_ as the default arguments. If you provide arguments they are used instead.

sub z {
    my $i =1;
    foreach (@_) {
        print "$i  : $_\n";
        $i++;
    }
}
sub x {
    &z;                   # 1
    &z( "good", "bye");
    &z;                   # same as one again
    &z();                 # called with empty list
}

x( "say", "hello");
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