@@ -215,9 +215,8 @@ passing a hash produces a list of key/value pairs: The C<show_pets()> function works because the C<%pet_names_and_types> hash flattens into the list C<'Lucky', 'dog', 'Rodney', 'dog', 'Tuxedo', 'cat', -'Petunia', 'cat'>. The hash assignment inside the function C<show_pets()> -works essentially as the more explicit assignment to C<%pet_names_and_types> -does. +'Petunia', 'cat'>. The hash assignment inside the function C<show_pets()> works +essentially as the more explicit assignment to C<%pet_names_and_types> does. This is often useful, but there are limitations to understand. If you wish to make a C<show_pets_of_type()> function, where one parameter is the I<type> of @@ -232,8 +231,8 @@ C<pop> to remove it from the end of C<@_>): while (my ($name, $species) = each %pets) { - B<next unless $species eq $type;> ## Isn't using 'unless' frowned upon? - say "$name is a $species"; ## according to PBP? (jeremiah) + B<next unless $species eq $type;> + say "$name is a $species"; } } @@ -374,7 +373,7 @@ names: Functions in namespaces are I<visible> outside of those namespaces in the sense that you can refer to them directly, but they are only callable by their short -names from within the namespace in which they are declared, unless you have +names from within the namespace in which they are declared--unless you have somehow made them available to the current namespace through the processes of importing and exporting. sections/functions.pod cd6ab69edc5e9beaa2a321d52ce9671432822c25 chromatic chromatic@wgz.org http://github.com/chromatic/modern_perl_book/commit/2cab6da9205f76cdf4b2da90d7ada07be602aada 2cab6da9205f76cdf4b2da90d7ada07be602aada 2009-11-05T16:59:53-08:00 2009-11-05T16:59:53-08:00 Pull request from Jeremiah Foster; minor edits to Functions/Subroutines chapter. 50e02638a1c3e7a9775b61ec6fe62126139f7b39 chromatic chromatic@wgz.org