Croak if gv_init doesn't know how to create a typeglob from that type

[p5sagit/p5-mst-13.2.git] / pod / perlop.pod

diff --git a/pod/perlop.pod b/pod/perlop.pod
index c50b242..db105e3 100644 (file)
--- a/pod/perlop.pod
+++ b/pod/perlop.pod
@@ -41,7 +41,7 @@ values only, not array values.
     left       << >>
     nonassoc   named unary operators
     nonassoc   < > <= >= lt gt le ge
-    nonassoc   == != <=> eq ne cmp
+    nonassoc   == != <=> eq ne cmp ~~
     left       &
     left       | ^
     left       &&
@@ -199,7 +199,11 @@ the operand is an identifier, a string consisting of a minus sign
 concatenated with the identifier is returned.  Otherwise, if the string
 starts with a plus or minus, a string starting with the opposite sign
 is returned.  One effect of these rules is that -bareword is equivalent
-to the string "-bareword".
+to the string "-bareword".  If, however, the string begins with a
+non-alphabetic character (exluding "+" or "-"), Perl will attempt to convert
+the string to a numeric and the arithmetic negation is performed. If the
+string cannot be cleanly converted to a numeric, Perl will give the warning
+B<Argument "the string" isn't numeric in negation (-) at ...>.
 X<-> X<negation, arithmetic>
 
 Unary "~" performs bitwise negation, i.e., 1's complement.  For
@@ -426,6 +430,12 @@ argument is stringwise less than, equal to, or greater than the right
 argument.
 X<cmp>
 
+Binary "~~" does a smart match between its arguments. Smart matching
+is described in L<perlsyn/"Smart Matching in Detail">.
+This operator is only available if you enable the "~~" feature:
+see L<feature> for more information.
+X<~~>
+
 "lt", "le", "ge", "gt" and "cmp" use the collation (sort) order specified
 by the current locale if C<use locale> is in effect.  See L<perllocale>.
 
@@ -705,8 +715,8 @@ might trigger, such as from tie().  Other assignment operators work similarly.
 The following are recognized:
 
     **=    +=    *=    &=    <<=    &&=
-    -=     /=    |=    >>=   ||=    //=
-           .=    %=    ^=
+           -=    /=    |=    >>=    ||=    
+           .=    %=    ^=           //= 
                 x=
 
 Although these are grouped by family, they all have the precedence