Hi Ben,
My issue is specific to pipes. What I'm ultimately doing is taking a JSON
object, parsing it with Poison.decode!, And then attempting to pull a
single key out, either overrideoncall or oncall.
On Mon, Mar 20, 2017, 7:49 AM Ben Wilson <benwilson...@gmail.com> wrote:
> Can you elaborate on the code you have in mind? This sounds like a general
> characteristic of pipes and not something specific to Map.get_lazy.
>
>
> On Monday, March 20, 2017 at 6:48:46 AM UTC-4, David Long wrote:
>
> That's not entirely accurate. In my case I was using a series of pipes so
> I did not have access to the map. My case might be very niche, though.
>
> On Mon, Mar 20, 2017, 12:44 AM José Valim <jose....@plataformatec.com.br>
> wrote:
>
> The reason why get_lazy does not pass the map is because you already have
> the map, since you pass it as first argument.
>
> On Mon, Mar 20, 2017 at 03:44 David Long <david....@gmail.com> wrote:
>
> I was working on some code that would simply test if one key was in a map
> and return it's value, and otherwise return a different key's value.
>
> The map had a form like the following:
>
> %{
> oncall: "dlong",
> overrideoncall: "jsmith",
> ...
> }
>
>
> If there was someone overriding on call then their name would be in the `
> overrideoncall` key, otherwise the key would not be in the map.
>
> I think this could be a nice use for `Map.get_lazy`, if the function had
> the original map passed in, allowing me to write the code as follows:
>
> Map.get_lazy(on_call_group, :overrideoncall, &(&1[:oncall]))
>
>
> Before I wrote a pull request, I thought I'd see if this is a feature that
> makes sense to others?
>
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