On Thu, 2009-07-16 at 17:31 -0700, Ian Lance Taylor wrote: > For an integer type there is no performance difference between ++x and > x++. > > For a C++ class which defines operator++ and a copy constructor, there > can be performance differences between ++x and x++. The latter often > requires the compiler to invoke the copy constructor to hold onto the > old value before invoking operator++. So if you are writing C++, it's > often a good idea to write ++x when x is a class type, such as an STL > iterator. The compiler can sometimes eliminate the copy constructor, > but not always. > > Ian Thank you, Ian. Being mostly a C programmer, I often forget about the things that C++ does behind the scenes. My real preference is assembly language. Then it's just me and the machine. ;) Bob
