Major performance problem with std.array.front()

[Andrei Alexandrescu]

On 3/9/14, 5:28 AM, Joseph Rushton Wakeling wrote:
> On 09/03/14 04:26, Andrei Alexandrescu wrote:
>>>> 2. Add byChar that returns a random-access range iterating a string by
>>>> character. Add byWchar that does on-the-fly transcoding to UTF16. Add
>>>> byDchar that accepts any range of char and does decoding. And such
>>>> stuff. Then whenever one wants to go through a string by code point
>>>> can just use str.byChar.
>>>
>>> This is confusing. Did you mean to say that byChar iterates a string by
>>> code unit (not character / code point)?
>>
>> Unit. s.byChar.front is a (possibly ref, possibly qualified) char.
>
> So IIUC iterating over s.byChar would not encounter the decoding-related
> speed hits that Walter is concerned about?

That is correct.

Andrei