Steven Obua: > (if (Boolean. false) "jesus" "christ") > > will return "jesus", not "christ". Googling this on the net, I found > that this is a known phenomenon
http://docs.oracle.com/javase/7/docs/api/java/lang/Boolean.html#Boolean(boolean) says: «Note: It is rarely appropriate to use this constructor. Unless a new instance is required, the static factory valueOf(boolean) is generally a better choice.» Now lets take a look at some of the alternative choices: user=> (if (Boolean/valueOf true) "true" "false") "true" user=> (if (Boolean/valueOf false) "true" "false") "false" user=> (if (Boolean/valueOf "false") "true" "false") "false" user=> (if (Boolean/valueOf "true") "true" "false") "true" user=> (if (Boolean/TRUE) "true" "false") "true" user=> (if (Boolean/FALSE) "true" "false") "false" user=> (if false "true" "false") "false" user=> (if true "true" "false") "true" So, what does all this mean? 1. This is not a Clojure behavior but a Java one. Somehow millions of Java developers and projects managed to get by with this weird behavior. 2. This fact is documented and there are alternatives. 3. You can get very far with just true and false literals, especially in pure Clojure programs. MK -- 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
