GSoC-2011 project:: Containers

[Daniel Gibson]

Am 30.03.2011 01:55, schrieb Jonathan M Davis:
> On 2011-03-29 14:50, dsimcha wrote:
>> == Quote from Jonathan M Davis (jmdavisProg at gmx.com)'s article
>>
>>> The fancier stuff would be nice, but we don't even have a doubly-linked
>>> list yet. We should get the simpler stuff sorted out before we get
>>> particularly fancy, not to mention that it's usually the simple stuff
>>> that gets heavily used.
>>
>> For the most part I agree, but a doubly linked list might be **too**
>> simple. Linked lists are so trivial to implement that I'd tend to roll my
>> own that does exactly what I need with regard additional behavior on
>> insertion, etc. rather than wrapping a library solution to get these
>> features.
>
> A doubly-linked list is on the list of containers that every standard library
> should have or it's likely to be considered lacking. I can understand rolling
> your own for specific uses, but _I_ sure don't want to be doing that if I
> don't have to. If I want a doubly-linked list, I want to be able to just
> create a standard one and use it. C++, C#, and Java all have doubly-linked
> lists in their standard libraries.
>
> If no one else ever implements a doubly-linked list for Phobos, I'll probably
> do it eventually simply because it's one of the containers that is on the
> short list of containers that pretty much every standard library has.
>
> - Jonathan M Davis

It may be feasible to enhance the single-linked list to support both 
single- and double linking, via an additional template-parameter "bool 
doubly" or something like that and some static-ifs in the implementation.
I once created a simple single/double-linked queue for D1 like that.

Cheers,
- Daniel