X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2Foverload.pm;h=690be22175115742c8142118419525fbbc1d77e7;hb=a07cd53d52eddd3373b7f4babb55144d44a1613d;hp=8a07efec6974a1d237abc7f820d3cc3b7d1b5758;hpb=0d863452f5cac86322a90184dc68dbf446006ed7;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/lib/overload.pm b/lib/overload.pm
index 8a07efe..690be22 100644
--- a/lib/overload.pm
+++ b/lib/overload.pm
@@ -1,8 +1,6 @@
 package overload;
 
-our $VERSION = '1.03';
-
-$overload::hint_bits = 0x20000; # HINT_LOCALIZE_HH
+our $VERSION = '1.04';
 
 sub nil {}
 
@@ -149,7 +147,7 @@ sub constant {
     }
     else {
         $^H{$_[0]} = $_[1];
-        $^H |= $constants{$_[0]} | $overload::hint_bits;
+        $^H |= $constants{$_[0]};
     }
     shift, shift;
   }
@@ -517,11 +515,6 @@ The key C<"fallback"> governs what to do if a method for a particular
 operation is not found.  Three different cases are possible depending on
 the value of C<"fallback">:
 
-=head2 Smart Match
-
-The key C<"~~"> allows you to override the smart matching used by
-the switch construct. See L<feature>.
-
 =over 16
 
 =item * C<undef>
@@ -547,6 +540,11 @@ C<"nomethod"> value, and if this is missing, raises an exception.
 B<Note.> C<"fallback"> inheritance via @ISA is not carved in stone
 yet, see L<"Inheritance and overloading">.
 
+=head2 Smart Match
+
+The key C<"~~"> allows you to override the smart matching used by
+the switch construct. See L<feature>.
+
 =head2 Copy Constructor
 
 The value for C<"="> is a reference to a function with three
@@ -668,6 +666,23 @@ value is a scalar and not a reference.
 
 =back
 
+=head1 Minimal set of overloaded operations
+
+Since some operations can be automatically generated from others, there is
+a minimal set of operations that need to be overloaded in order to have
+the complete set of overloaded operations at one's disposal.
+Of course, the autogenerated operations may not do exactly what the user
+expects. See L<MAGIC AUTOGENERATION> above. The minimal set is:
+
+    + - * / % ** << >> x
+    <=> cmp
+    & | ^ ~
+    atan2 cos sin exp log sqrt int
+
+Additionally, you need to define at least one of string, boolean or
+numeric conversions because any one can be used to emulate the others.
+The string conversion can also be used to emulate concatenation.
+
 =head1 Losing overloading
 
 The restriction for the comparison operation is that even if, for example,
@@ -783,9 +798,6 @@ From these methods they may be called as
 	  overload::constant integer => sub {Math::BigInt->new(shift)};
 	}
 
-B<BUGS> Currently overloaded-ness of constants does not propagate
-into C<eval '...'>.
-
 =head1 IMPLEMENTATION
 
 What follows is subject to change RSN.
@@ -1091,7 +1103,7 @@ The value of $side is
 
 Note that while we obtained this value using a nice little script,
 there is no simple way to I<use> this value.  In fact this value may
-be inspected in debugger (see L<perldebug>), but ony if
+be inspected in debugger (see L<perldebug>), but only if
 C<bareStringify> B<O>ption is set, and not via C<p> command.
 
 If one attempts to print this value, then the overloaded operator