Hi. I am completely new to clojure - my 3rd day or so. Need to go buy a book on the subject. So please help me with a couple of things:
Item 1) I have two calls to count. One works, and the other does not. ; counts number of items in collection user=> (count (list 1 2 3 4 "er" 34) ) 6 ; count does not work. I get an exception. Need to figure out what I am doing wrong here. user=> (count (list 23 "3er" oel" 5) ) java.lang.Exception: EOF while reading string Item 2) I see from the documentation that the contains? function (it is a function, right? just want to be sure. this is my 2nd or 3rd day learning about clojure.) returns true if key is present in collection. And there is a reference in the online docs to "numerically indexed collections like vectors and Java arrays". In the following examples, the first one works as I expected. But the second one does not work as I thought. How do I check if an item is in a list? ; does the vector contain index 0? user=> (contains? [1 2 3 4] 0) true ; could not get it to work for lists. apparently works only for numerically indexed collections like vectors. ; doesn't throw an exception either. "intuitively", I think the following should have returned true. user=> (contains? (list "3e" "2 tired" "1 more") "3e" ) false Your help is much appreciated. Thank you for your time. - Srini As an aside, I guess I am approaching this as I have regular procedural languages like C, C++, Java, C#, VB, and my all-time favourite so far - Python, etc. And its taking a different kind of thinking to even understand the basics of closure since its just so different from the others. I am recording my learning experiences in my very first blog ever :) http://closurefp.blogspot.com/ Hopefully it will help someone. -- 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
