Ken Shan <[EMAIL PROTECTED]> writes: > --a8Wt8u1KmwUX3Y2C > Content-Type: text/plain; charset=us-ascii > Content-Disposition: inline > Content-Transfer-Encoding: quoted-printable > > Hello, > > In Haskell, backquotes can be used to convert individual identifiers > into infix operators, but not complex expressions. For example, > > [1,2,3] `zip` [4,5,6] > > is OK, but not > > [1,2,3] `zipWith (+)` [4,5,6] > > Is there any reason other than potential confusion when one of the two > backquotes is accidentally omitted? > > In any case, perhaps some people on this mailing list would appreciate > the following implementation of "infix expressions" that Dylan Thurston > and I came up with -- as algebraic and perverse as we could manage: > > infixr 0 -:, :- > data Infix f y =3D f :- y > x -:f:- y =3D x `f` y > > main =3D print $ [1,2,3] -: zipWith (+) :- [4,5,6]
This is a funny tricks. Does some people know other kind of tricks (possibly in other functionnal langage) ? > > --=20 > Edit this signature at http://www.digitas.harvard.edu/cgi-bin/ken/sig > The trick is that there is no trick. > > --a8Wt8u1KmwUX3Y2C > Content-Type: application/pgp-signature > Content-Disposition: inline > > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.0.7 (GNU/Linux) > > iD8DBQE9RZgzzjAc4f+uuBURAjl6AKCQmYb0HJvk2VicBlRD6zRX9VfRRgCg9F2B > YPXu07Uqrz8pj2iUt+HVM3U= > =WjJq > -----END PGP SIGNATURE----- > > --a8Wt8u1KmwUX3Y2C-- > _______________________________________________ > Haskell-Cafe mailing list > [EMAIL PROTECTED] > http://www.haskell.org/mailman/listinfo/haskell-cafe > -- Yoann Padioleau, INSA de Rennes, France, Opinions expressed here are only mine. Je n'écris qu'à titre personnel. **____ Get Free. Be Smart. Simply use Linux and Free Software. ____** _______________________________________________ Haskell-Cafe mailing list [EMAIL PROTECTED] http://www.haskell.org/mailman/listinfo/haskell-cafe
