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fix group_by_keys (#20)

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When there are more than 2 values that have the same key,
group_by_keys misbehave and produce something like
`%{list: [["a", "b"], "c"]}`
This commit is contained in:
Po Chen 2016-09-09 07:10:22 +10:00 • committed by Eduardo Gurgel
parent e53c1a217e
commit 3b1da703f0
1 changed files with 3 additions and 3 deletions
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6
lib/httparrot/general_request_info.ex
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@ -14,8 +14,8 @@ defmodule HTTParrot.GeneralRequestInfo do
@doc """ @doc """
Group by keys and if duplicated keys, aggregate them as a list Group by keys and if duplicated keys, aggregate them as a list
iex> group_by_keys([a: "v1", a: "v2", b: "v3"]) iex> group_by_keys([a: "v1", a: "v2", b: "v3", a: "v4"])
%{a: ["v1", "v2"], b: "v3"} %{a: ["v1", "v2", "v4"], b: "v3"}
""" """
@spec group_by_keys(list) :: map @spec group_by_keys(list) :: map
def group_by_keys([]), do: %{} def group_by_keys([]), do: %{}
@ -24,7 +24,7 @@ defmodule HTTParrot.GeneralRequestInfo do
|> Enum.map(fn {k, v} -> %{k => v} end) |> Enum.map(fn {k, v} -> %{k => v} end)
|> Enum.reduce(fn m, acc -> |> Enum.reduce(fn m, acc ->
Map.merge(m, acc, fn _k, v1, v2 -> Map.merge(m, acc, fn _k, v1, v2 ->
[v2, v1] List.wrap(v2) ++ List.wrap(v1)
end) end)
end) end)
end end