Andrew, "pipe improvements" are common proposals to the mailing list that
are always rejected. Please search for previous discussions on the topic
for more information.
*José Valim*
www.plataformatec.com.br
Skype: jv.ptec
Founder and Director of R&D
On Mon, Jul 10, 2017 at 9:01 AM, <and...@paypip.com> wrote:
> Hi guys,
>
> I see a lot of libraries try to allow piping to the first parameter by
> default, but some don't support this easily.
>
> I propose the following syntax to remedy this where it's needed to pipe to
> a specific parameter:
>
> 1) Normal pipe clearly works the same:
>
> %{} |> SomeCode.function(other_params) === SomeCode.function(%{},
> other_params)
>
> 2) The number of > dictates the position of the function we want to pipe
> into:
>
> %{} |>> SomeCode.function("param1") === SomeCode.function("param1", %{})
>
> 3) We could also supply opts and other params:
>
> %{} |>> SomeCode.function("param1", %{opts_are_param_3: true}) ===
> SomeCode.function("param1", %{}, %{opts_are_param_3: true})
>
> 4) We can move to any specific param we want with more arrows, maybe limit
> it to 4, say to avoid it becoming ridiculous.
>
> %{} |>>> SomeCode.function("param1", %{this_is_param_2: true}) ===
> SomeCode.function("param1", %{this_is_param_2: true}, %{})
>
> Thoughts? Would other people find this useful in some situations?
>
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