On Thursday, 1 October 2020 at 09:49:36 UTC, Mathias LANG wrote:
[snip]
Author here. The most complete way to know would be to read the
changelog: https://dlang.org/changelog/2.094.0.html#preview-in
The TL;DR is that, in addition to `const scope`, `in` now
automatically behaves as `ref` when "it makes sense" such as
large value types or presence of destructors / postblit (more
details in the changelog!) and will accept rvalues, unlike
other ref parameters.
Typo from the link
"However, this didn't really capture the intended meaning of in:
the be applied on input parameters. "
