support delete() and exists() on array, tied array, and pseudo-hash

elements or slices

p4raw-id: //depot/perl@4796

1 files changed, 6 insertions, 4 deletions

diff --git a/pod/perltie.pod b/pod/perltie.pod
index 5611174669..58e9c4375b 100644
--- a/pod/perltie.pod
+++ b/pod/perltie.pod
@@ -185,10 +185,12 @@ methods: TIEARRAY, FETCH, STORE, FETCHSIZE, STORESIZE and perhaps DESTROY.
 FETCHSIZE and STORESIZE are used to provide C<$#array> and
 equivalent C<scalar(@array)> access.
     
-The methods POP, PUSH, SHIFT, UNSHIFT, SPLICE are required if the perl
-operator with the corresponding (but lowercase) name is to operate on the
-tied array. The B<Tie::Array> class can be used as a base class to implement
-these in terms of the basic five methods above.  
+The methods POP, PUSH, SHIFT, UNSHIFT, SPLICE, DELETE, and EXISTS are
+required if the perl operator with the corresponding (but lowercase) name
+is to operate on the tied array. The B<Tie::Array> class can be used as a
+base class to implement the first five of these in terms of the basic
+methods above.  The default implementations of DELETE and EXISTS in
+B<Tie::Array> simply C<croak>.
 
 In addition EXTEND will be called when perl would have pre-extended 
 allocation in a real array.