diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/overload.pm | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/lib/overload.pm b/lib/overload.pm index 54d2cbb441..28e7d0b3e7 100644 --- a/lib/overload.pm +++ b/lib/overload.pm @@ -26,18 +26,18 @@ sub unimport { } sub Overloaded { - defined ($package = ref $_[0]) and defined %{$package . "::OVERLOAD"}; + ($package = ref $_[0]) and defined %{$package . "::OVERLOAD"}; } sub OverloadedStringify { - defined ($package = ref $_[0]) and + ($package = ref $_[0]) and defined %{$package . "::OVERLOAD"} and exists $ {$package . "::OVERLOAD"}{'""'} and defined &{$ {$package . "::OVERLOAD"}{'""'}}; } sub Method { - defined ($package = ref $_[0]) and + ($package = ref $_[0]) and defined %{$package . "::OVERLOAD"} and $ {$package . "::OVERLOAD"}{$_[1]}; } @@ -186,7 +186,9 @@ arrays, C<cmp> is used to compare values subject to C<use overload>. "&", "^", "|", "neg", "!", "~", "C<neg>" stands for unary minus. If the method for C<neg> is not -specified, it can be autogenerated using the method for subtraction. +specified, it can be autogenerated using the method for +subtraction. If the method for "C<!>" is not specified, it can be +autogenerated using the methods for "C<bool>", or "C<\"\">", or "C<0+>". =item * I<Increment and decrement> @@ -361,6 +363,11 @@ can be expressed in terms of C<$aE<lt>0> and C<-$a> (or C<0-$a>). can be expressed in terms of subtraction. +=item I<Negation> + +C<!> and C<not> can be expressed in terms of boolean conversion, or +string or numerical conversion. + =item I<Concatenation> can be expressed in terms of string conversion. |