Re: [Haskell-cafe] A beginners question

fmap (^4) [1,2,3] >>= \i -> shows i " "

gives

"1 16 81 "

You are in the list comprehension in a monadic expression. shows is called three times (i is int).

then why does

let i = fmap (^4) [1,2,3] in shows i " "

give

"[1,16,81] "

"shows" is called once (i is a list).