Why Strings as Classes?

[Denis Koroskin]

On Tue, 26 Aug 2008 23:29:33 +0400, superdan <super at dan.org> wrote:
[snip]
>> The D spec certainly doesn't make any guarantees about
>> the time/memory complexity of opIndex; it's up to the implementing class
>> to do so.
>
> it don't indeed. it should. that's a problem with the spec.
>

I agree. You can't rely on function invokation, i.e. the following might  
be slow as death:

auto n = collection.at(i);
auto len = collection.length();

but index operations and properties getters should be real-time and have  
O(1) complexity by design.

auto n = collection[i];
auto len = collection.length;