[mercury-users] string append

Peter Ross peter.ross at miscrit.be
Wed Aug 2 19:11:52 AEST 2000


On Wed, Aug 02, 2000 at 12:58:08PM +1000, Peter Schachte wrote:
> On Wed, Aug 02, 2000 at 09:15:08AM +1000, David Overton wrote:
> > As Rob and Ralph have mentioned, there is already a functional version
> > of append (for both strings and lists).  You can use it as an infix
> > operator by enclosing it in backquotes, e.g.:
> > 
> > 	S = S0 `append` S1 `append` S2
> 
> Out of curiosity, are `backquoted` operators left- or right-associative?  Ie,
> if you care about efficiency, do you really have to write
> 
It is left associative and has the highest precedence possible (which is
the same as haskell).

Pete
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