haskell IO() 这里出了什么问题？
嘿，我一直在做 haskell，并且在我的一张表中，我被要求做一个 buildList，
我得到了
buildList :: [String] -> IO ()
buildList thelist = do
putStr "Enter a line: "
str <- getLine
if str == ""
then return ()
else do let list = str:thelist
print list
buildList list
，我还必须添加一个 listBuilder :: IO () ，每当我尝试运行时，我都会收到一个奇怪的
ERROR file:.\week8.hs:92 - Syntax error in input (unexpected `=')
错误结论是 buildList 有问题，即使它有效，因为我不能在它下面放置任何新函数，即使是不需要使用 buildList 函数的函数，
如果有人知道如何解决这个问题，我将不胜感激。谢谢
〜汤姆
hey i have been doing haskell and with one of my sheets i was asked to do a buildList
i got
buildList :: [String] -> IO ()
buildList thelist = do
putStr "Enter a line: "
str <- getLine
if str == ""
then return ()
else do let list = str:thelist
print list
buildList list
I also had to add a listBuilder :: IO () as well which when ever i try to run I get a weird error
ERROR file:.\week8.hs:92 - Syntax error in input (unexpected `=')
it came to the conclusion that there is something wrong with the buildList, even though it works, as I cant put any new function underneath it, even ones that dont need to use the buildList function
if anyone knows how to fix this, it would be much appreciated. thanks
~tom
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缩进函数体，以便解析器知道它在哪里结束。
Indent the body of the function so the parser knows where it ends.