GHCi error: Not in scope

Posted by dmindreader on Stack Overflow See other posts from Stack Overflow or by dmindreader
Published on 2010-04-04T21:08:03Z Indexed on 2010/04/04 21:13 UTC
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haskell

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ghci

I'm trying to compile this function from Learn You a Haskell for Great Good.

 removeNonUppercase st = [ c | c <- st, c `elem` ['A'..'Z']]

by placing it into a removeNonUpperCase.hs file.

It compiles fine, but when passing the argument:

ghci> removeNonUppercase "Hahaha! Ahahaha!"

the compiler says:

<interactive>:1:0: Not in scope: 'removeNonUpperCase'

Why?

PrintScreen:

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