Erlang Crud

richards_crud.erl

-module(richards_crud).

-compile(export_all).

new() ->
  maps:new().

build(Key, Value, Map) ->
  maps:put(Key, Value, Map).

show(Key, Map) ->
  maps:get(Key, Map).

update(Key, Value, Map) ->
  maps:update(Key,Value,Map).

destroy(Map) ->
  maps:without(maps:keys(Map),Map).

richards_crud_issues.txt

1> c(richards_crud).
=> {ok,richards_crud}
2> M1 = richards_crud:new().
=> #{}
3> richards_crud:build("age", 37, M1).
=> {"age" => 37}
4> richards_crud:build("gender", "M", M1).
=> {"gender" => "M"}

Then if I tried to do a maps:find("gender",M1). I would get `error`