For the record, I point out that its not a "bug" specifically because you will see this many many many many times throughout the book. In fact, pretty much any time a new function or form is introduced.
(function-name argument-1 argument-2 ... argument-n) This is not real code meant to be pasted into the REPL and evaluated, but rather a high level example of how a particular function works. Hope that helps :) On Sat, Nov 17, 2012 at 5:46 PM, Charlie Griefer <charlie.grie...@gmail.com> wrote: > On Sat, Nov 17, 2012 at 5:32 PM, Milen Ivanov <milen.iva...@gmail.com> wrote: >> Dear Mr. Chose, >> >> Thank you for your help! >> >> So, the "bug" is then in the book. Fine. > > There's no "bug" in the book. > > You copied sample code that's meant to show the syntax of using conj > directly into the repo, using undeclared values. > > (conj coll item) is not meant to run on its own. It's demonstrating > that the function conj takes a collection and an item, and returns a > new collection with the item added on. > > So as BG pointed out, you can do: > > (conj [1 2 3] 4), in which [1 2 3] is a collection (vector) and 4 is > the item to be conj'd, which returns a new vector [1 2 3 4]. > (conj '(1 2 3) 4), in which '(1 2 3) is a collection (list) and 4 is > the item to be conj'd, which returns a new list (4 1 2 3) > > If you want to do (conj coll item) you need to define coll and item, > which BG did as: > > (def coll [1 2 3 4 5]) > (def item 6) > > Now that "coll" and "item" exist, you can do (conj coll item), which > is the same as doing (conj [1 2 3 4 5] 6). > > But you cannot simply do (conj coll item), and this is not a "bug" in > the book, but rather a description of how conj works. > > -- > Charlie Griefer > http://charlie.griefer.com/ > > I have failed as much as I have succeeded. But I love my life. I love > my wife. And I wish you my kind of success. -- Charlie Griefer http://charlie.griefer.com/ I have failed as much as I have succeeded. But I love my life. I love my wife. And I wish you my kind of success. -- 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
