Shannon Murdoch wrote:
>
> > From: [EMAIL PROTECTED] (Brett W. McCoy)
> >
> > On Wed, 24 Oct 2001, Shannon Murdoch wrote:
> >
> >> I know how to print the contents of a hash, but what if I wanted to print
> >> the keys themselves that the hash is called from (delimited by tabs)?
> >>
> >> This is how I print the contents of a hash (Thanks to Brett W. McCoy):
> >>
> >> %params = qw(
> >> i01 4
> >> i02 5
> >> i03 2
> >> );
> >>
> >> foreach (sort keys %params) { print "\t$params{$_}" }
> >
> > The same way. $_ is the key for the hash element in the while loop.
>
> I want a list of keys, not their values though.
you can do it like this:
foreach (sort(keys(%params))) { print "$_: $params{$_}\n"; }
or like this (which, to me, is easier to read):
foreach my $key (sort(keys(%params))) { print "$key: $params{$key}\n"; }
perldoc -f keys
perldoc -f values
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