ross: > On Fri, Jul 27, 2007 at 12:08:30AM +1000, Donald Bruce Stewart wrote: > > There's a theory this should work: > > > > getContents >>= lines >>> map read >>> sum >>> print > > > > But unfortunately we have: > > > > `(>>=)' [infixl 1] > > `(>>>)' [infixr 1] > > > > Meaning we must write: > > > > getContents >>= (lines >>> map read >>> sum >>> print) > > > > Indeed, all Arrow ops are infixr. > > Are there any technical/compelling reasons for this? > > Not that I can recall. But it's the precedence rather than the > associativity that's bothering you here.
Yes, I suppose it is a vote for 0.5 precedence, if they're not to behave as for >> and >>= ? Which are: infixl 1 >>, >>= So I can write: print 'x' >> getChar >>= ord >>> print -- Don _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe