Stefan O'Rear wrote:
On Sat, Mar 24, 2007 at 08:05:25PM +0000, Paul Johnson wrote:
strings, are instances of the Monoid class (i.e. they implement mplus in
the way you would expect). You just have to wrap a function around
Actually they don't.
[EMAIL PROTECTED]:/tmp$ ghc-6.4.2 -v0 -e 'main' X.hs
ABend
[EMAIL PROTECTED]:/tmp$ ghc-6.6 -v0 -e 'main' X.hs
AendBend
[EMAIL PROTECTED]:/tmp$ cat X.hs
import Data.Monoid
main = putStrLn $ (str1 `mappend` str2) "end"
str1 = ("A" ++)
str2 = ("B" ++)
Does this mean that the semantics have changed? If so, which one is
correct?
Paul
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