I'd like to point out the partial application operator: https://github.com/tc39/proposal-partial-application
Sounds like the combination of pipeline + partial application would result in what is essentially the same as function composition operator: ``` const h = ? |> f |> g; ``` Which results in `h` being the composition `g • f`. On Feb 24, 2018 02:21, "Naveen Chawla" <[email protected]> wrote: That could be a problem for readability. I agree with the rest of what you said. On Sat, 24 Feb 2018 at 11:16 Viktor Kronvall <[email protected]> wrote: > I don’t know the implications but I could easily imagine the pipeline > proposal being extended to not taking any input on the left hand side and > effectively represent composition in the opposite direction. > > For example: > ``` > let h = |> f |> g > h(2) //g(f(2)) > ``` > > That said, the point holds for the proposal in its current state. Being > able to compose functions > leads to much more expressivity than if you have > to call the pipeline (and collapse) where it is defined. > 2018年2月24日(土) 14:32 Naveen Chawla <[email protected]>: > >> The function composition operator composes function pipelines into >> functions for later use and/or further composition. Those functions still >> need to be called via the existing `()` syntax, so it doesn't offer a >> different way of calling functions as such. >> >> The function pipeline operator calls the function pipeline immediately, >> so it is really only a different way of calling functions. >> >> On Fri, 23 Feb 2018 at 12:37 Jordan Harband <[email protected]> wrote: >> >>> How is either operator not "a different way of calling functions"? >>> >>> On Thu, Feb 22, 2018 at 8:34 PM, Naveen Chawla <[email protected]> >>> wrote: >>> >>>> I was just thinking about the relative merits and coexistence (or not) >>>> of function composition operator and function pipeline operator features: >>>> >>>> e.g. >>>> https://github.com/TheNavigateur/proposal-pipeline-operator-for- >>>> function-composition >>>> https://github.com/tc39/proposal-pipeline-operator >>>> >>>> They can of course co-exist, but there is overlap only in the respect >>>> that both allow function pipelines to be called from left to right (except >>>> the input parameter in the case of the composition feature, which requires >>>> existing bracket syntax to be used to call it). If one were to be chosen, >>>> would say that a function composition operator adds a whole new dimension >>>> of expressive power to the language, whereas a pipeline operator only >>>> offers a different way of calling functions. >>>> >>>> I was wondering about all of your thoughts about whether you'd prefer >>>> only the pipeline operator, only the composition operator, or both, or >>>> neither to be added to the language (these are pretty much all the >>>> possibilities), and why. >>>> >>>> _______________________________________________ >>>> es-discuss mailing list >>>> [email protected] >>>> https://mail.mozilla.org/listinfo/es-discuss >>>> >>>> >>> _______________________________________________ >> es-discuss mailing list >> [email protected] >> https://mail.mozilla.org/listinfo/es-discuss >> > _______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
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