[Haskell-cafe] type error
Cetin Sert
cetin.sert at gmail.com
Thu Dec 11 01:49:33 EST 2008
Hi,
Why does this not function?
Prelude> sequence [print 'a', print 2]
'a'
2
[(),()]
*Prelude> let myprint = print*
*Prelude> sequence [myprint 'a', myprint 2]*
<interactive>:1:18:
Couldn't match expected type `()' against inferred type `Char'
In the first argument of `myprint', namely 'a'
In the expression: myprint 'a'
In the first argument of `sequence', namely
`[myprint 'a', myprint 2]'
Can providing some type annotations (interactively in ghci or in some .hs
file) help solve the problem?
Best Regards,
CS
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