diff --git a/doc/optional.html b/doc/optional.html index d29bd07..7ebdf9c 100644 --- a/doc/optional.html +++ b/doc/optional.html @@ -1049,7 +1049,7 @@ assert ( optX != optZ ) ; 
bool operator > ( optional<T> const& x, optional<T> const& y );
-

Returns: !( y < x );

+

Returns: ( y < x );

Throws: Nothing.

@@ -1428,10 +1428,10 @@ public:

A note about optional<bool>

optional<bool> should be used with special caution and consideration.

-

First, it is functionally similar to a tristate boolean (false,maybe,true) —such as boost::tribool (not yet formally in boost)—except that in a tristate boolean, +

First, it is functionally similar to a tristate boolean (false,maybe,true) —such as boost::tribool—except that in a tristate boolean, the maybe state represents a valid value, unlike the corresponding state of an uninitialized optional<bool>.
-It should be carefully considered if an optional bool instead of a tribool is really needed

+It should be carefully considered if an optional<bool> instead of a tribool is really needed

Second, optional<> provides an implicit conversion to bool. This conversion refers to the initialization state and not to the contained value.
Using optional<bool> can lead to subtle errors due to the implicit bool conversion: