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Description
Describe the bug
Unexpected results
To Reproduce
-module(abc).
%% API
-export([a/1, b/1]).
-record(abc, {data}).
-record(kv, {k, v}).
a(Data) ->
F =
fun(Map) ->
{maps:get(a, Map, 0),
#kv{
k = maps:get(a, Map, 0),
v = maps:get(b, Map, 0)
}}
end,
#abc{data = maps:from_list(lists:map(F, Data))}.
b(Data) ->
F =
fun(Map) ->
#kv{
k = maps:get(a, Map, 0),
v = maps:get(b, Map, 0)
}
end,
#abc{data = maps:from_list(lists:map(F, Data))}.Expected behavior
(game_ccc_1@127.0.0.1)24> Data = [#{a => 1, b => 2}, #{a => 3, b => 4}].
[#{a => 1,b => 2},#{a => 3,b => 4}]
(game_ccc_1@127.0.0.1)25> abc:a(Data).
{abc,#{1 => {kv,1,2},3 => {kv,3,4}}}
(game_ccc_1@127.0.0.1)26> abc:b([]).
#{}
(game_ccc_1@127.0.0.1)27> abc:b(Data).
* exception error: bad argument
in function maps:from_list/1
called as maps:from_list([{kv,1,2},{kv,3,4}])
in call from abc:b/1 (apps/mmo_server/src/role/abc.erl, line 43)why ach:b([]). return #{} not return #abc{}
Alternatively, an error can be reported instead of receiving unexpected results
Affected versions
Erlang/OTP 26 [erts-14.2.5.4]
Additional context
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