Standard library suggested addition

[peerreynders]

Have a look at the Access behaviour.

• Access.elem/1

• Access.at/1

• Access.key/2

etc.

iex(1)> users = [{"john", 27}, {"meg", 23}]
[{"john", 27}, {"meg", 23}]
iex(2)> keys = [Access.at(1), Access.elem(0)]
[#Function<1.79554587/3 in Access.at/1>,
 #Function<2.79554587/3 in Access.elem/1>]
iex(3)> get_in(users, keys)
"meg"
iex(4)>