Re: Table lookups - this is pretty definitive

[Daniel N]

On Tuesday, 1 April 2014 at 18:35:50 UTC, Walter Bright wrote:
Try this benchmark comparing various classification schemes:
bool isIdentifierChar1(ubyte c)
{
   return ((c >= '0' || c == '$') &&
           (c <= '9' || c >= 'A')  &&
           (c <= 'Z' || c >= 'a' || c == '_') &&
           (c <= 'z'));
}

Considering SSE4.2 was released already back in 2008 and was 
designed to accelerate this very use-case...

Maybe it's more beneficial to add a few new code-paths... SSE4.2, 
NEON, etc.