HI Andy, Thanks for your reply.
On Wed, Aug 27, 2014 at 8:29 PM, Andy Fingerhut <andy.finger...@gmail.com> wrote: > FYI, if you *want* warnings about redefinition of functions, or any vars > in general, the Clojure lint tool Eastwood does that, among other things: > > https://github.com/jonase/eastwood > > Andy > > > On Wed, Aug 27, 2014 at 7:32 AM, Tassilo Horn <t...@gnu.org> wrote: > >> Hemant Gautam <gettingerr...@gmail.com> writes: >> >> Hi Hemant, >> >> > This is the code >> > >> > (ns clojure_begins_19_08_2014.core) >> >> Use hyphens instead of underscores for namespace and var names. >> >> > (defn first-fn[x] >> > (print x)) >> > >> > (defn first-fn[x] >> > (print "Value of x with String " x)) >> > >> > (first-fn 10) >> > >> > See, above code consists of two function with same name and with same >> > number of arguments. When I call first-fn, the function declared >> > later gets called. I get output as: >> > >> > Value of x with String 10 >> > nil >> > >> > So can any one explain how this thing is happening >> >> The second definition overrides the first one. That's possible in >> Clojure because when developing you usually have a REPL connection and >> add and change functions in the live system as you go. >> >> > and also explain how we can have same function written 2 times in a >> > same namespace. >> >> You can't. Or more precise, you can't after the file has been loaded. >> Note that when your file above is loaded, in between of the two defns >> you could call (first-fn 10) which would only print "10" because in this >> short region, the first version is active. >> >> Possibly one could enhance the Clojure compiler or reader so that it >> emits a warning in case a function is defined twice in the same file and >> namespace. But since you can also have multiple files defining stuff in >> the same namespace, I guess intended overriding during a REPL session >> and unintended overriding like above may become hard to distinguish. >> >> Bye, >> Tassilo >> >> -- >> 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 >> --- >> You received this message because you are subscribed to the Google Groups >> "Clojure" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to clojure+unsubscr...@googlegroups.com. >> For more options, visit https://groups.google.com/d/optout. >> > > -- 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 --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
