On Wednesday, August 15, 2018 3:21:29 AM MDT Per Nordlöw via Digitalmars-d- learn wrote: > Have anybody thought about non-throwing variants of std.conv.to > typically named `tryTo` > similar to what Folly > > https://github.com/facebook/folly/blob/master/folly/docs/Conv.md#non-throw > ing-interfaces > > does, for instance, as > > tryTo<int>(str).then([](int i) { use(i); }); > > ? > > Would it be sane to add these to std.conv alongside existing > std.conv.to so that underlying logic in std.conv.to can be reused? > > If so, AFAICT, existing std.conv.to should be implemented on top > of std.conv.tryTo.
Yes. I've considered writing a set of conversion functions like std.conv.to which return a Nullable!T (where the target type is T) and return Nullable!T.init when the conversion fails rather than throwing, and they really should be in std.conv alongside to, reusing logic as much as reasonably possible, but it's not a small project. It's come up off and on for a while now, so I expect that someone will do it eventually (and I may at some point if no one else does), but obviously, someone has to actually take the time to do it, or it's not going to happen. - Jonathan M Davis