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surgex
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All Things Elixir @ Surge Ventures Inc, the creators of Fresha
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lib/surgex/parser/parsers/contain_parser.ex
defmodule Surgex.Parser.ContainParser do
@moduledoc """
Checks if the given parameter's value is on the list of allowed values.
"""
@doc false
@spec call(nil, any) :: {:ok, nil} | {:ok, any} | {:error, :invalid_value}
def call(nil, _allowed_values), do: {:ok, nil}
def call(input, allowed_values) when is_list(allowed_values) do
case Enum.member?(allowed_values, input) do
true -> {:ok, input}
false -> {:error, :invalid_value}
end
end
end