I tried coming up with a decent Result type and Try macro in C++ and got nowhere. To be usable I need something like this:

auto varname = Try(expression);

Where the Try expression will either return the error type immediately or evaluate to the success type.

As far as I can tell there's no portable way to implement that macro in C++20, and nothing coming down the pipe either. I don't think chaining lambdas is good enough. It can make the code uglier than just manually checking returns.

I'll be happy if anyone can correct me though. The best I managed was still pretty gross:

TryBind(varname, expression);

Works, but it just looks like a bad DSL at that point.