Array append performance

[Denis Koroskin]

On Mon, 25 Aug 2008 21:51:33 +0400, bearophile <bearophileHUGS at lycos.com>  
wrote:

> Robert Jacques:
>> This only works if strings are objects as there's an aliasing issue, so  
>> it
>> won't work for D arrays.
>
> Well, D 2.x strings (and their slices) are immutable, so there is no  
> problem. I agree that for mutable data structures (that can be modified  
> from references) storing the hash value is dangerous. A compromise may  
> be to have mutable arrays but immutable slices, that may solve the  
> problem you show. Slices are small, so having them immutable is probably  
> not too much bad.
>
> Bye,
> bearophile

I don't follow you. Immutability of the slice implies that the whole array  
is immutable, too.
Besides, how often do you take a hash of an array other than string?