我寫了簡單的Hello World服務器(HTTP)和我宣佈了我的請求處理程序的類型,預計有型,而是「請求」有一種「* - > *」
type RequestHandler = Request -> IO Response
它拋出錯誤的,
simpleserver.hs:11:23:
Expecting one more argument to ‘Request’
Expected a type, but ‘Request’ has kind ‘* -> *’
In the type ‘Request -> IO Response’
In the type declaration for ‘RequestHandler’
此錯誤消息是沒有意義的我..
爲什麼THI拋出錯誤,我該如何解決這個問題?