5
Prelude Data.Void> :info Void
data Void -- Defined in `Data.Void'
instance [safe] Eq Void -- Defined in `Data.Void'
instance [safe] Ord Void -- Defined in `Data.Void'
instance [safe] Read Void -- Defined in `Data.Void'
instance [safe] Show Void -- Defined in `Data.Void'
[安全]是什麼意思?[安全]標記在ghci中的含義是什麼?
已更新指向[Haskell用戶指南安全擴展]的鏈接(https://downloads.haskell.org/~ghc/7.8.4/docs/html/users_guide/safe-haskell.html) – mschmidt