Re: [boost] Outcome/expected/etc/etc/etc

Subject: Re: [boost] Outcome/expected/etc/etc/etc
From: Niall Douglas (s_sourceforge_at_[hidden])
Date: 2017-06-06 09:26:07

> Let's see if I got it correctly.
> 
> I, the user of your library, have to make the choice:
> 1. Either I get minimum-overhead (trivially-copyable) `result<T>`, with
> limited ability to carry payload.
> 2. Or I get ability to carry any payload, but at the expense of paying the
> cost of copying `outcome<T>`s.
> 
> Since filesystem_error already has non-trivial copy, I loose nothing when
> going with option 2 (using `outcome<T>`).

Even outcome<T> in current Outcome already charges you the expense of
carrying arbitrary payload which is why it has non-trivial
copy/move/destruct.

But tl;dr; the answer is you have it correct.

Niall

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