Thanks everyone. I didn't even think about it.
2010/11/11 Isaac Dupree
On 11/11/10 03:24, 贾旭卿 wrote:
This is exercise 3.1 of Real World Haskell. I have my length function like this:
myLength [] = 0 myLength (_:xs) = 1 + (myLength xs)
And I assumed the type signature is like this: mylength :: [a] -> Num
But when I wrote this into the file and reloaded it into ghci, there is an error.
The type signature for `mylength' lacks an accompanying binding
Failed, modules loaded: none.
In addition to what Chaddaï Fouché said, this particular error is simply due to writing "mylength" when it should be "myLength" (L uppercase).
-Isaac _______________________________________________ Beginners mailing list Beginners@haskell.org http://www.haskell.org/mailman/listinfo/beginners