Currently, Elixir provides a number of functions that make working with
nested data structures very easy and pleasant:
- get_in/2
- get_and_update_in/2 and get_and_update_in/3
- update_in/2 and update_in/3
- put_in/2 and put_in/3
- pop_in/1 and pop_in/2
Unfortunately, there’s no similar function for deleting a value from a
nested structure. Is its omission intentional? I think a delete_at function
would be very useful:
data = %{users: [%{name: "John", age: 27}, %{name: "Betty", age: 40}]}
delete_at(data, [:users, Access.all(), :age])# => %{users: [%{name: "John"},
%{name: "Betty"}]}
I imagine it would also make sense to provide a delete_at/1 macro that
allows the path to be passed using access syntax, just like what put_in/2,
pop_in/1, etc provide.
Thoughts?
Myron
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