From: Vladimir Prus [mailto:ghost@cs.msu.su]

As Andras Erdei the gap between people who know about special properties of operator(), and those who know that overloaded version does not have that properties is very, very narrow.

FWIW, I knew that a comma was a sequence point from experience with C but didn't know (never thought about) that it lost that property when overloaded in C++. Glen