Rob Stewart <stewart@sig.com> writes:
From: "Neal D. Becker" <nbecker@hns.com>
This handy little item, lvalue_cast, would make a useful addition to boost. I didn't write it, and I don't recall who did.
template<class T> inline T& lvalue_cast (const T& rvalue) { return const_cast<T&> (rvalue); }
That's just a different spelling of const_cast. To make it useful, you need to make it more generic:
template <typename T> inline T & lvalue_cast(T & value_i) { return value_i; }
That, of course, permits you to silently cast away the const-ness of const lvalues.
That's news to me. AFAICT it's totally safe, but it doesn't work with rvalues, which sort of undermines the whole thing. -- Dave Abrahams Boost Consulting http://www.boost-consulting.com