sorting - Erlang ETS 带有袋型元素排序

Question

我有一些这样的代码:

Table = ets:new(table, [bag]),
true = ets:insert(Table, {bucket_1, some_value_1}),
true = ets:insert(Table, {bucket_1, some_value_2}),
true = ets:insert(Table, {bucket_1, some_value_3}),

LookupResult = ets:lookup(Table, bucket_1),
?_assertEqual(
    [{bucket_1, some_value_1}, {bucket_1, some_value_2}, {bucket_1, some_value_3}],
    LookupResult
).

ETS 是否保证桶内元素的排序？我是否应该期望 ETS 保存元素的顺序，因为元素已添加到表中？

Answer 1

specification of lookup/2说:

[...] the time order of object insertions is preserved; the first object inserted with the given key will be first in the resulting list, and so on.