overheads, neither of which were strengths of the original prototype Boost.Expected library.</p>

<p>By August 2015 &ldquo;Boost.Monad&rdquo; was delivering on all those requirements and then some, but it lacked
maturity through use in other code. Summer 2015 saw the Boost peer review of AFIO v1 which
was roundly rejected. After considering the ample review feedback, it was realised that
<a href="https://ned14.github.io/llfio/">AFIO v2</a> would be a very different design, one no longer using futures, memor