Thank you!
Miro

On 6/17/12 9:08 AM, Morel Pisum wrote:
What you want is probably

checkNode :: String -> [String] -> Bool
checkNode s nodes = and (map (==s) nodes)

which returns True iff all nodes equal s.


Am a bit stuck here,... please, what is wrong with this?

checkNode :: String -> [String] -> Bool
checkNode s nodes =
   [s == node | node <- nodes ]


src/me.hs:3:4:
    Couldn't match expected type `Bool' with actual type `[t0]'
[1 of 1] Compiling Main             ( src/me.hs, interpreted )
    In the expression: [s == node | node <- nodes]
Failed, modules loaded: none.
    In an equation for `checkNode':
        checkNode s nodes = [s == node | node <- nodes]

thanks,
Miro

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