On Thu, Apr 21, 2016 at 4:19 PM, Xidorn Quan <quanxunz...@gmail.com> wrote: >> >> Maybe you're referring to factory methods, like this: >> >> static T* T::New(); >> >> which would return null on failure. Such methods can be useful, but >> there's two problems. First, they're not applicable to stack-allocated >> objects. Second, you still have to do your fallible initialization >> *within* the factory method, and so you still have to choose with >> either constructor+Init or constructor+outparam, so you still have to >> make a choice. > > You can probably merge Init into this factory method, and make constructors > private.
Inlining Init into the factory method doesn't change the fundamentals. Initialization is still split across two functions. You still can't use references and |const| as much. > For stack-allocated objects, you can probably return a Maybe<>? I played around with Maybe<> and couldn't come up with something nice. I may have missed something. Even if there is a nice way involving Maybe<>, I'm pretty sure you'll still end up having to make a choice between constructor+Init and constructor+outparam within the factory method. Nick _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
