title: Will there be standardization of scope guard/scope exit idioms?
body: <p>Running a lambda on scope exit seems like such a basic thing, I would expect it to be standardized. Things like <code>unique_ptr</code> are better, when they apply, but I find there is an endless supply of "one-off" destructors are needed, especially when leveraging C-style libraries. Does anyone know if this is coming?</p>