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这是一个使用反应香蕉库的Haskell FRP程序示例.我只是刚刚开始尝试使用Haskell,特别是对于FRP的含义并不是很清楚.我真的很感激对下面代码的批评

{-# LANGUAGE DeriveDataTypeable #-}
module Main where

{-
Example FRP/zeromq app.

The idea is that messages come into a zeromq socket in the form "id state". The state is of each id is tracked until it's complete.
-}

import Control.Monad
import Data.ByteString.Char8 as C (unpack)
import Data.Map as M
import Data.Maybe
import Reactive.Banana
import System.Environment (getArgs)
import System.ZMQ

data Msg = Msg {mid :: String, state :: String}
    deriving (Show, Typeable)

type IdMap = Map String String

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