When you define test4 in your first example, the compiler doesn't know that test1 is dynamic, so it'll optimise out the var for performance.
To fix it, ensure that the var is declared as dynamic: (declare ^:dynamic test1) - James On 7 February 2017 at 03:26, guid <[email protected]> wrote: > hello everyone > > I have a problem about binding function in clojure1.8. > when I changed position of function which call a bound function I got > different result. > > If I define test4 (call test1 within it) before test1, binding would not > work > > (declare test1) > > (defn test2 [](prn "test2")) > > > (defn test4 [] (test1)) > > > (defn ^:dynamic test1 [] (prn "dynamic test1")) > > > (defn testB [] > (binding [test1 test2] > (test1) > (test4) > )) > > > when I call (testB) result is > > "test2" > "dynamic test1" > > > But if I change postion of (defn test4 xxx) and (defn ^:dynamic test1 xxxx), > binding will work well. > > > (declare test1) > > (defn test2 [](prn "test2")) > > > (defn ^:dynamic test1 [] (prn "dynamic test1")) > > > (defn test4 [] (test1)) > > > (defn testB [] > > (binding [test1 test2] > (test1) > (test4) > )) > > > result is > > "test2" > "test2" > > > Any way, with-bindings is the same as binding, but why ? > > > ======== > > any help would be appreciated > > -- > You received this message because you are subscribed to the Google > Groups "Clojure" group. > To post to this group, send email to [email protected] > Note that posts from new members are moderated - please be patient with > your first post. > To unsubscribe from this group, send email to > [email protected] > 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 [email protected]. > 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 [email protected] Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to [email protected] 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 [email protected]. For more options, visit https://groups.google.com/d/optout.
