On Monday, 20 April 2015 at 10:42:54 UTC, Chris wrote:
> On Monday, 20 April 2015 at 10:27:00 UTC, anonymous wrote:
>> On Monday, 20 April 2015 at 10:14:27 UTC, Chris wrote:
>>> string a = "bla";
>>> string b = "blub";
>>>
>>> auto res = doSomething(a, b);
>>>
>>> If I didn't use "auto ref" or "ref", string would get copied, wouldn't it?
>>>
>>> auto ref doSomething(R needle, R haystack);
>>>
>>> To avoid this, I would have to write a[0..$], b[0..$], which is not nice. Right or wrong?
>>
>> Wrong. `a[0..$]` is the same as simply `a`. A `string` is just another slice: a pointer and a length.
>
> Ah, I see. So strings don't get copied around and I can remove ref, very good.

For the record. I mixed up the results there. The code executed directly in the for loop is faster than using a struct, it's also faster than using a mixin template (around 10 msecs). My apologies.