[Haskell-cafe] Syntax proposal for "reverse apply"/"pipeline apply" (flip ($))

[Ben Foppa]

($$) conflicts with conduit :)


On Fri, Apr 18, 2014 at 6:21 AM, Alexander Berntsen <alexander at plaimi.net>wrote:

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> On 18/04/14 12:09, Malcolm Wallace wrote:
> > I would like to strongly oppose the theft of the (&) operator from
> > general use.  The proposal to put it in Data.Function, such that
> > you need to know you are importing it, is OK, but it should never
> > go into the Prelude.
> It is unlikely to ever go into Prelude as '&'. The current patch only
> puts it in Data.Function.
>
> I still maintain that '|>' and '<|' are preferable, and could go in
> prelude regardless of Data.Sequence.
>
> '&' represents conjunction in my head, and furthermore it does not
> obviously relate to '$'. To remedy my concerns, I think David
> Menendez's suggested '$$' should be strongly considered. This also
> remedies your concern of occupying all the one-character namespace,
> which makes it a stronger candidate for prelude than '&'.
>
> And I do think that we should have a reverse application operator in
> Prelude. Sitting in Data.Function it is only barely more convenient
> than defining it yourself.
> - --
> Alexander
> alexander at plaimi.net
> https://secure.plaimi.net/~alexander
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