Usage

.. code::

defer ( <exps | statements> ); defer ( <exps | statements> ) namely ( );

Example

.. code::

if ((fd = mkstemp(buf)) < 0) return -1; defer(close(fd); unlink(buf)); // auto-close, auto-delete when scope exits.

defer(vec_.pop_back()) namely(undoer); vec_.push_back(x); /* something may fail */ undoer.dismiss(); // strong guarantee

See also

.. [1] C++11（及现代C++风格）和快速迭代式开发 http://mindhacks.cn/2012/08/27/modern-cpp-practices/

.. [2] Generic: Change the Way You Write Exception-Safe Code ― Forever http://www.drdobbs.com/cpp/generic-change-the-way-you-write-excepti/184403758