@skosch from reading the solutions here i did this (thougt id share for the next person)
def map_put(data, keys, value) do
# data = %{} or non empty map
# keys = [:a, :b, :c]
# value = 3
put_in(data, Enum.map(keys, &Access.key(&1, %{})), value)
end
def many_map_puts(data, keys_values) do
# data = %{} or non empty map
# keys_values = [[keys: [:a, :b, :c], value: 4],[keys: [:z, :y, :x], value: 90]]
Enum.reduce(keys_values, data, fn x, data ->
map_put(data, x[:keys], x[:value])
end)
end
iex(1)> m = [[keys: [:a, :b, :c], value: 4],[keys: [:z, :y, :x], value: 90]]
[[keys: [:a, :b, :c], value: 4], [keys: [:z, :y, :x], value: 90]]
iex(2)> many_map_puts(%{}, m)
%{a: %{b: %{c: 4}}, z: %{y: %{x: 90}}}