Is there any reason to use non-ref foreach?

[Dukc]

On Friday, 31 August 2018 at 12:52:17 UTC, bauss wrote:
> In reality you're micro-optimizing something that doesn't 
> require it.

I think you misunderstood. I wasn't trying to optimize, I was 
looking for a general way to iterate.

> I can't see the benefit other than added complexity.

I just explained it. Iterating by ref works with elements that 
have postblits disabled, iterating by value doesn't.

I was wondering that if iterating by ref is the most general way 
to iterate, why it isn't the default? Is there some big 
implication in using it?