On Tue, Dec 13, 2011 at 2:47 PM, Eli Barzilay <e...@barzilay.org> wrote: > 10 minutes ago, John Clements wrote: >> I know that there are some differences between the 'fourth' family >> and the 'cadddr' family w.r.t. the kinds of arguments that they >> accept, but it seems to me that if I have a (List Number Number >> Symbol String), for instance, that I should be able to use 'fourth' >> to get a String. > > There's a point for `first', `second', etc to do the same as `fourth' > does in the above because the underlying functions require a list. > But there's a counter point of having a (List ...) type in the first > place. So maybe `List' should also be limited to match what `fourth' > is doing? (IOW, the above `List' would be invalid, but if `fourth' is > made to work as John expects then it would be valid...?)
I don't understand this paragraph at all. That type specifies values that `fourth' will always work on. -- sam th sa...@ccs.neu.edu _________________________________________________ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/users
