Add DList to base

[Tony Morris]

Yeah, those are in lens, so I am less concerned that they don't appear in
base. Specifically, if DList were not to exist in base, and I use the
typeclasses that we all know as well as lens, what am I missing out on?

On Fri, Jun 9, 2017 at 10:30 AM, Ivan Lazar Miljenovic <
ivan.miljenovic at gmail.com> wrote:

> On 9 June 2017 at 09:41, Tony Morris <tmorris at tmorris.net> wrote:
> > Are there any DList specific functions, that are not provided by existing
> > type-classes (such as Foldable), that are typically used? I can think of
> a
> > few, but they are all in lens.
>
> singleton, cons, snoc
>
> Though if you have singleton (which can be obtained from either Endo
> or GHC.Ext.IsList.fromList and `(:[])`; alternatively you could use
> pure/return but that is less pleasant IMO than the singleton function
> for code legibility purposes) and mappend you can do cons and snoc.
>
> >
> > On Tue, Jun 6, 2017 at 4:24 PM, Henning Thielemann
> > <lemming at henning-thielemann.de> wrote:
> >>
> >>
> >> On Mon, 5 Jun 2017, David Feuer wrote:
> >>
> >>> DList x just doesn't have much more to offer than Endo [x]. We already
> >>> have Endo; ergo, we don't need DList.
> >>
> >>
> >> I admit that I already used Endo as a quickly available DList
> replacement.
> >>
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>
>
> --
> Ivan Lazar Miljenovic
> Ivan.Miljenovic at gmail.com
> http://IvanMiljenovic.wordpress.com
>
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