Merge pull request #328 from gfldex/master

fix :exists example | add :delete to Hash

Author: gfldex

doc/Type/Hash.pod

@@ -263,8 +263,17 @@ Some methods are implemented as adverbs on subscripts.
 The adverb C<:exists> returns C<Bool::True> if a key exists in the Hash. If more then one key is supplied it returns a C<List> of C<Bool>.
 
 	my %h = a => 1, b => 2;
-	say %h<a>;   # True
-	say %h<a b>; # (True True)
+	say %h<a>:exists;   # True
+	say %h<a b>:exists; # (True True)
+
+=head2 C<:delete>
+
+Use C<:delete> to remove a C<Pair> from the C<Hash>.
+
+	my %h = a => 1; 
+	dd %h;         # Hash %h = {:a(1)}
+	%h<a>:delete; 
+	dd %h          # Hash %h = {}
 
 =head2 C<:p>