小编bai*_*lus的帖子

这可能有什么问题？我已经尝试了多种解决方案,但最终都会出现'模块'上的错误以及主要后面的=符号.有没有搞错？!？!？!

printTabuleiro :: [[Char]] -> IO()
printTabuleiro [] = []
printTabuleiro (l :lt) = putStr l : printTabuleiro lt

module Main where

main = let 
          a = ["#####\n","###o##\n"] 
       in do printTabuleiro a

现在我得到了这个编译错误,我不明白这里的类型匹配问题.顺便说一句,我是相当新的,不习惯功能,请不要把我加入火星.

[1 of 1] Compiling Main             ( visualisacao.hs, interpreted )

visualisacao.hs:14:27:
    Couldn't match expected type ‘IO ()’ with actual type ‘[IO ()]’
    In the expression: putStr l : printTabuleiro lt
    In an equation for ‘printTabuleiro’:
        printTabuleiro (l : lt) = putStr l : printTabuleiro lt

visualisacao.hs:14:38:
    Couldn't match …