[Boost-bugs] [Boost C++ Libraries] #2748: [any] implement reset for direct constructing (adapt to noncopyable)

Subject: [Boost-bugs] [Boost C++ Libraries] #2748: [any] implement reset for direct constructing (adapt to noncopyable)
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2009-02-11 14:34:30

#2748: [any] implement reset for direct constructing (adapt to noncopyable)
------------------------------------+---------------------------------------
 Reporter:  nowake_at_[hidden]  |       Owner:  nasonov     
     Type:  Patches                 |      Status:  new         
Milestone:  Boost 1.39.0            |   Component:  any         
  Version:  Boost 1.38.0            |    Severity:  Optimization
 Keywords:  any noncopyable         |  
------------------------------------+---------------------------------------
 I modified boost::any to adapt noncopyable object.

 (a) add reset members to construct content directory.
 (b) modify boost::any::holder

 Sample:
  {{{
    struct A {
       A() : v() {};
       A(unsigned int value) : v(value) {};
       unsigned int v;
    };

    BOOST_AUTO_TEST_CASE(test01)
    {
       any test;
       test.reset<A>(10);
       BOOST_CHECK_EQUAL(any_cast<A>(test).v, 10);
       test.reset();
       BOOST_CHECK_EQUAL(test.empty(), true);
    }


    struct B : boost::noncopyable {
       B() : v1(), v2() {};
       B(unsigned int value1, unsigned int value2)
          : v1(value1) ,v2(value2)
       {};
       unsigned int v1, v2;
    };

    BOOST_AUTO_TEST_CASE(test02)
    {
       any test;
       //test = B();                 // compile error
       //test.reset<B>(10, 20);      // compile error
       test.reset<B, false>(10, 20);
       //any test2(test);            // throw
       any test2;
       //test2 = test;               // throw
       BOOST_CHECK_EQUAL(any_cast<B&>(test).v1, 10);
       BOOST_CHECK_EQUAL(any_cast<B&>(test).v2, 20);
    }
 }}}

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/2748>
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