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defrecord Sample, foo: 0, bar:
 
defmodule GenServer do
defmacro from_record(record) do
Enum.map record.__record__(:fields), fn({name,_}) ->
quote do
def handle_call(unquote(name), from, record) do
apply record, name, []
end
 
def handle_call({ name, value }, from, record) do
apply record, name, [value]
end
end
end
end
end
 
defmodule MyServer do
@behavior :gen_server
def init(_) do
{ :ok, Sample.new }
end
 
GenServer.from_record(Sample)
# Implement other callbacks
end
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