Re: Can you shrink it further?

[Stefan Koch via Digitalmars-d]

On Wednesday, 12 October 2016 at 10:15:17 UTC, Matthias Bentrup 
wrote:
On Wednesday, 12 October 2016 at 09:23:53 UTC, Stefan Koch 
wrote:
On Wednesday, 12 October 2016 at 08:56:59 UTC, Matthias 
Bentrup wrote:
[...]

All three are slower than baseline, for my test-case.
What did you test it against.

The blns.txt file mentioned upthread.

And what were your timings ?

BTW. the code you posted would not be a proper replacement for 
utf8 popFront since our UTF8-popFront does handle depreacted 
sequences correctly.

making it equivalent to this code :
void pfnew(ref char[] s) @trusted pure nothrow
{
    immutable c = s[0];
    uint char_length = 1;
    if (c < 192)
    {
Lend :
        s = s.ptr[char_length .. s.length];
    } else {
        if (c < 192+32)
        {
            char_length = 2;
        }
        else if (c < 192+32+16)
        {
            char_length = 3;
        }
        else if (c < 192+32+16+8)
        {
            char_length = 4;
        }
        else if (c < 192+32+16+8+4)
        {
            char_length = 5;
        }
        else if (c < 192+32+16+8+4+2)
        {
            char_length = 6;
        }

        char_length = char_length > s.length ? s.length : 
char_length;
        goto Lend;
    }
}