What are the worst parts of D?

[Andrei Alexandrescu via Digitalmars-d]

On 9/25/14, 9:05 PM, Vladimir Panteleev wrote:
> On Thursday, 25 September 2014 at 21:49:43 UTC, H. S. Teoh via
> Digitalmars-d wrote:
>> It's not just about performance.
>
> Something I recently realized: because of auto-decoding,
> std.algorithm.find("foo", 'o') cannot be implemented using memchr.

Why not? -- Andrei