On Sat, Aug 22, 2009 at 8:20 AM, Sean Devlin<francoisdev...@gmail.com> wrote: > > Welcome to Clojure! > > A String is a form of a Sequence, so the correct function is seq. >
I think we all need to be very careful about calling things sequences which are not. seq can give you a sequential view of many things, but that doesn't make those things sequences. Very few of the Clojure data structures are actual sequences, e.g. vectors, maps, strings etc are not. Nor do most Clojure collections implement the sequence (ISeq) interface. They implement the Seqable interface, which means seq works, and the thing that seq returns implements ISeq. The fact that first/rest/other-sequence-fns work on most collections falls out of the fact that they call seq on their args. It may seem like a nit, but I've seen a lot of confusion, e.g. people listing The Sequence Types: Vector, Map etc. Each of the data structures has important and unique characteristics (insertion, lookup etc) when not used sequentially. It just makes a mess of the abstractions to call them sequences. Rich --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~----------~----~----~----~------~----~------~--~---
