l world code never showed
a statistically significant difference, it was certainly true that v2.1&rsquo;s codegen in
assembler was not ideal.</p>

<p>On the behalf of WG21, Ben Craig did some benchmarking work on Outcome v2.1 in <a href="https://wg21.link/P1886">P1886 <em>Error speed benchmarking</em></a>,
where it did not perform as well as expected compared to alternatives such as returning
a simple integer from a function. This led to a
<a href="https://github.com/ned14/outcome/tree/better_optimisation">