josefrichter
Quick extraction of elem from tuple - best practice?
Hi,
I find myself doing something like this, mostly in tests:
{:ok, new_time} = Time.new(15, 00, 00)
valid_attrs = %{
body: "some body",
time: new_time
}
I wonder if it’s ok to extract the tuple value like this
valid_attrs = %{
body: "some body",
time: Time.new(15, 00, 00) |> elem(1)
}
I know I can do that, the question is whether I should be doing that this way? Thank you
Marked As Solved
stefanchrobot
I think you’re looking for Time.new! or ~T:
Time.new!(15, 00, 00)
~T[15:00:00]
Also Liked
trisolaran
The downside in this specific case is that you are ignoring possible errors. If Time.new returns {:error, :some_error_condition} then some_error_condition will end up in your valid_attrs map. This is in general not good :). But, if you are 100% sure that Time.new will always return a valid time, then it’s ok.
josefrichter
omg of course 
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