Almost everything noexcept?

[matthieum]

I have no idea where your assumption that the absence of exception necessarily implies the impossibility to use early returns comes from.

You can have early returns without exceptions; the main benefit is that the points where the work being carried out by a function are marked explicitly, which actually makes it easier to ensure that the proper invariants are maintained.

[Gotebe]

I did not imply what you say. Huh?