Consistent 'bool' conversions; scoped_ptr(auto_ptr); get_pointer(scoped_ptr) added.

[SVN r14496]
2002-07-17 15:15:39 +00:00
parent af6fe18c9d
commit 547888d507
4 changed files with 80 additions and 15 deletions
--- a/include/boost/shared_array.hpp
+++ b/include/boost/shared_array.hpp
@@ -92,6 +92,20 @@ public:
        return px;
    }

+    // implicit conversion to "bool"
+
+    typedef T * (this_type::*unspecified_bool_type)() const;
+
+    operator unspecified_bool_type() const // never throws
+    {
+        return px == 0? 0: &this_type::get;
+    }
+
+    bool operator! () const // never throws
+    {
+        return px == 0;
+    }
+
    bool unique() const // never throws
    {
        return pn.unique();