Add List.zip

[dasch]

This function makes it easy to zip together two lists:

zip [1,2,3] ['a','b'] == [(1,'a'), (2,'b')]

It took me a while to figure out that zip == map2 (,). The principle of least surprise would dictate that common things have names.

[jvoigtlaender]

@dasch, please read https://github.com/elm-lang/core/blob/master/CONTRIBUTING.md#adding-new-functions for the protocol concerning suggestions of new functions for core.

In the specific case of zip, you need not even start a new list-extras. The function is already here: http://package.elm-lang.org/packages/circuithub/elm-list-extra/3.7.0/List-Extra#zip

[jvoigtlaender]

@dasch, please read https://github.com/elm-lang/core/blob/master/CONTRIBUTING.md#adding-new-functions for the protocol concerning suggestions of new functions for core.

In the specific case of zip, you need not even start a new list-extras. The function is already here: http://package.elm-lang.org/packages/circuithub/elm-list-extra/3.7.0/List-Extra#zip

[dasch]

Okay - how would the process look for suggesting getting that function
moved into core, then? The CONTRIBUTING.md file seems to leave that part as
TBD...

As a newcomer, this is sort of frustrating.
On Fri, 9 Oct 2015 at 19:01 Janis Voigtländer notifications@github.com
wrote:

Closed #421 https://github.com/elm-lang/core/pull/421.

—
Reply to this email directly or view it on GitHub
https://github.com/elm-lang/core/pull/421#event-431626834.

[dasch]

Okay - how would the process look for suggesting getting that function
moved into core, then? The CONTRIBUTING.md file seems to leave that part as
TBD...

As a newcomer, this is sort of frustrating.
On Fri, 9 Oct 2015 at 19:01 Janis Voigtländer notifications@github.com
wrote:

Closed #421 https://github.com/elm-lang/core/pull/421.

—
Reply to this email directly or view it on GitHub
https://github.com/elm-lang/core/pull/421#event-431626834.

[jvoigtlaender]

This is really for @evancz to answer, but these days and I guess at least another week or so he will be very busy with the Elm 0.16 release.

So I can only say what I learned in other conversations, various tickets here on the core repo, the mailing lists etc.:

There is going to be a larger overhaul of the whole of core at some point, possibly for Elm 0.17 or Elm 0.18. At that point, the various *-extras packages will be taken into account. And I guess there will also be general discussions in this repo and on the mailing list at that time, to make coherent decisions.

So the process for suggesting getting that function moved into core is to get it into a *-extras package. That can be a new one you create yourself, or it can be an existing one by someone else to which you make a pull request (for example, https://github.com/Apanatshka/elm-signal-extra is being developed that way, by collecting Signal-related extra functions by various people). Or, as I pointed out for the specific case of zip, there may be no need to do anything at all, because there is already such a *-extras package (ready for consideration when the time for the core overhaul comes) that contains it.

Hmm, I think I have more or less just repeated what is already in my earlier comment and the link I provided there. So if this is not enough information about the process, what additional information do you need? What should be added to https://github.com/elm-lang/core/blob/master/CONTRIBUTING.md#adding-new-functions to make things clearer?

[jvoigtlaender]

This is really for @evancz to answer, but these days and I guess at least another week or so he will be very busy with the Elm 0.16 release.

So I can only say what I learned in other conversations, various tickets here on the core repo, the mailing lists etc.:

There is going to be a larger overhaul of the whole of core at some point, possibly for Elm 0.17 or Elm 0.18. At that point, the various *-extras packages will be taken into account. And I guess there will also be general discussions in this repo and on the mailing list at that time, to make coherent decisions.

So the process for suggesting getting that function moved into core is to get it into a *-extras package. That can be a new one you create yourself, or it can be an existing one by someone else to which you make a pull request (for example, https://github.com/Apanatshka/elm-signal-extra is being developed that way, by collecting Signal-related extra functions by various people). Or, as I pointed out for the specific case of zip, there may be no need to do anything at all, because there is already such a *-extras package (ready for consideration when the time for the core overhaul comes) that contains it.

Hmm, I think I have more or less just repeated what is already in my earlier comment and the link I provided there. So if this is not enough information about the process, what additional information do you need? What should be added to https://github.com/elm-lang/core/blob/master/CONTRIBUTING.md#adding-new-functions to make things clearer?

[dasch]

Thanks for taking the time to respond – I guess your description of the process is simply better :-)

[dasch]

Thanks for taking the time to respond – I guess your description of the process is simply better :-)