Example of implementing Access protocol (behaviour?) in Struct

Questions & Help Questions
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5

Wasn’t quite sure what you were after. Probably you wanted:

iex> my_struct = %MyStruct{x: %{y: "this thing"}}
%MyStruct{x: %{y: "this thing"}}
iex> get_in(my_struct, [Access.key(:x), Access.key(:y, "my_default")])
"this thing"

Note that since :x is just a map you can do the following if you don’t need to supply a default (which you shouldn’t have to so since this is about a struct:

iex> get_in(my_struct, [Access.key(:x), :y])                          
"this thing"