"Robert Ramey" <ramey@rrsd.com> writes:
Maybe someone could clarify something for me.
My understanding of the C++ standard for libraries is that the interface and semantics are defined by the standard but that actual implementation is purposely left undefined.
Hence, adding say regex to the standard doesn't add any code to the standard.
I don't know what you mean by "add code to the standard."
It just certifies that anything that claims to be compatible with the C++ regex standard works as the standard says it does.
No, it says that any C++ implementation that claims to be standard compliant contains a conforming regex implementation. There have as yet been no moves toward "subsetting" of the C++ standard (other than the "hosted"/"non-hosted" distinction -- look it up if you care). Either an implementation provides everything the standard specifies, and can therefore claim compliance, or not. There's not going to be a separate "C++ regex standard." -- Dave Abrahams Boost Consulting www.boost-consulting.com