Rafael applied my documentation patch yesterday: 
-Returns each element so deleted or the undefined value if there was n
+o such
-element.  Deleting from C<$ENV{}> modifies the environment.  Deleting
+ from
+Returns a list with the same number of elements as the number of elem
+ents
+for which deletion was B<attempted>.  Each element of that list consi
+sts of
+either the value of the element deleted, or the undefined value.  In 
+scalar
+context, this means that you get the value of the last element delete
+d (or
+the undefined value if that element did not exist).
+
+    %HASH = (foo => 11, bar => 22, baz => 33);
+    $scalar = delete $HASH{foo};            # $scalar is 11
+    $scalar = delete @HASH{qw(foo bar)};    # $scalar is 22
+    @array  = delete @HASH{qw(foo bar baz)} # @array  is (undef,undef
+,33)
+
+Deleting from C<$ENV{}> modifies the environment.  Deleting from
 a hash tied to a DBM file deletes the entry from the DBM file.  Delet
+ing
 from a C<tie>d hash or array may not necessarily return anything.

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Liz

In reply to Re: Re: Deleting undef values from a hash by liz
in thread Deleting undef values from a hash by liz

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