On 8/11/07, Frank Buss <[EMAIL PROTECTED]> wrote: > > Is it possible to write a function like this: > > zipn n list_1 list_2 list_3 ... list_n > > which implements zip3 for n=3, zip4 for n=4 etc.? Looks like variable > number > of arguments are possible, like printf shows, so a general zipn should be > possible, too. If it is possible, why there are functions like zip5 and > not > just zipn?
Template Haskell can also be used to generate appropriate code for zipn (in fact, the original paper on TH even uses this as an example [1]). But again, this approach only works if the value of n is known at compile time. -Brent [1] http://www.haskell.org/th/papers/meta-haskell.ps
_______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
