When trying to right IO I continually run across this
sort of compile error which I just don't understand.
Any help would be very muich appreciated.
Function:
while :: IO Bool -> IO () -> IO ()
while test action = do res <- test
if res then do action
while test action
else return ()
Error:
io.hs: 112 lines, 2463 characters.
Reading file "io.hs":
Parsing
ERROR io.hs:110 - Last generator in do {...} must be an expression
Tom
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