[Haskell-cafe] Re: Re-order type (flip map)

[Henning Thielemann]

Stephen Tetley schrieb:
> On 11 October 2010 00:00, Johannes Waldmann
> <waldmann at imn.htwk-leipzig.de> wrote:
>>> My point was: you need to find/define two operators, not just one.
>> Sure, I need  flip ($)  and  flip (.)
>>
>> Since the Prelude forgot to define these (and  flip map),
>> the question was: are there established names for these two operators?
>>
> 
> (#) was quite "established" for flip ($) around 2000 - its in a couple
> of papers that appeared at the PADL conferences - one written by Erik
> Meijer, Daan Leijen and (I think) James Hook on scripting Microsoft
> Agents with COM. The authors noted reverse application with (#) gave
> code a nice OO-like reading.
> 
> The other was Peter Thiemann's Wash - (#) is again flip ($) and (##)
> is flipped compose.

also in Functional Metapost.