I understand the reasoning. That's why I suggest the name `take` NOT the name `first` to make it clear there is no implied ordering.
The use case for this is often while working in IEx. I have a collection of _somethings_ and I want to see what one _something_looks like. I don't care about ordering. Rails' ActiveRecord has a method called `take` which does much the same thing - there is no implied ordering, it just grabs a member using some unspecified ordering and returns it. We already have `take/1` which returns the "first" X elements, so it seems logical to me to extend that to `take/0` which returns the "first" ONE element. On Thursday, April 20, 2017 at 5:55:22 PM UTC+1, Allen Madsen wrote: > > Also hd, which takes the head of the list. > > Allen Madsen > http://www.allenmadsen.com > > On Thu, Apr 20, 2017 at 12:44 PM, OvermindDL1 <[email protected] > <javascript:>> wrote: > >> Two things: >> 1. The `List` module already has a `List.first/1`. >> 2. Not all enumerables have a concept of ordering, like a map, so I'm not >> sure an Enum version of such a thing makes conceptual sense? >> >> On Thursday, April 20, 2017 at 10:33:11 AM UTC-6, Sam Davies wrote: >>> >>> When working with collections it's often convenient to grab the first >>> element that comes to hand. I find myself writing this a lot: >>> >>> `Enum.take(collection, 1)` or `Enum.at(collection, 0)` >>> >>> How about a function `Enum.take/1` which takes only the collection and >>> returns the "first" value (I avoid naming it `Enum.first/1` since some >>> collections may not have any concept of ordering). >>> >> -- >> You received this message because you are subscribed to the Google Groups >> "elixir-lang-core" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected] <javascript:>. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/elixir-lang-core/69a0953e-07b3-4cc6-8cc0-bee718337ea5%40googlegroups.com >> >> <https://groups.google.com/d/msgid/elixir-lang-core/69a0953e-07b3-4cc6-8cc0-bee718337ea5%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> >> For more options, visit https://groups.google.com/d/optout. >> > > -- You received this message because you are subscribed to the Google Groups "elixir-lang-core" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/elixir-lang-core/bd395d6b-e64d-41ef-970e-8ac33c0e279c%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
