wzit / deferxx

A Go's defer-like syntax scope guard idiom in C++11

Usage

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

Example

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