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	foreach ( iter \%numbers )
	{	
		$str3.=key;
	}

 println $str3;

[Note] "::sort_wild" refers to the 'main::' namespace, where this snippet was placed.

=head1 HIGHER FUNCTIONS

=head2 $hash_ref = transform_array_to_hash( $array_ref )

 $array_ref =
    [
    tcf1 => 28.44
    tcf1 => 28.13
    tcf3 => 26.92
    tcf3 => 26.09
    gapdh => 17.08
    gapdh => 16.1
    ];

Then a call

  transform_array_to_hash( $array_ref )

will return this hash

 {
   gapdh => ["17.08", "16.1"],
   tcf1  => ["28.44", "28.13"],
   tcf3  => ["26.92", "26.09"],
 }

=head1 BUGS

Not get(counter+1), but get(1+counter) will function correctly (under perl 5.6.0).

And get(counter - 1) does not work.

=head1 FUTURE

Add some decent $Data::Iter::options

=over 4

=item *
counter base value (for example start from 1 instead of 0).

=back

=head1 EXPORT

none by default.

'all' => (iter counter COUNTER LAST_COUNTER value VALUE key KEY get GET getnext GETNEXT)

=head1 PITFALLS

You should use L<iter()> only on 'quite' static structures. Since the static precalculated iterations
are not tied to the original data structure. So its changes will not be updated.

=head1 AUTHOR

Murat Uenalan, E<lt>muenalan@cpan.orgE<gt>

=head1 SEE ALSO

L<Class::Iter>, L<Tie::Array::Iterable>, L<Object::Data::Iterate>

=cut