Of possible interest: fast UTF8 validation

[Jack Stouffer]

On Wednesday, 16 May 2018 at 11:18:54 UTC, Andrei Alexandrescu 
wrote:
> https://www.reddit.com/r/programming/comments/8js69n/validating_utf8_strings_using_as_little_as_07/

D doesn't seem to have C definitions for the x86 SIMD intrinsics, 
which is a bummer

https://issues.dlang.org/show_bug.cgi?id=18865

It's too bad that nothing came of std.simd.