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型付きホールの型クラス制約をGHCに提供させる方法はありますか?
現在の行動 Prelude> show _ <interactive>:7:6: Found hole ‘_’ with type: a0 Where: ‘a0’ is an ambiguous type variable Relevant bindings include it :: String (bound at <interactive>:7:1) In the first argument of ‘show’, namely ‘_’ In the expression: show _ In an equation for ‘it’: it = show _ 望ましい行動 …