Axe
Motivation
Updating nested data structures in Elixir can be tricky. The macro variant of Kernel.*_in is alright, but it cannot be piped and it only supports maps and keyword lists.
Example
import Axe
...
%{z: [%{b: 2}, %{b: 6}], x: %{q: 0}}
|> put_in(~a[x.q], 3)
|> update_in(~a[z.*.b], & &1 + 1)
|> update_in(~a[z.@0.b], & &1 + 100)
# %{z: [%{b: 103}, %{b: 7}], x: %{q: 3}}
