It's the laziness; because the value of the call to map is never consumed, it is never produced either, so the throw never happens.
On Jan 25, 1:05 am, Kei Suzuki <ksd...@gmail.com> wrote: > Form3 makes me puzzled. Form1 and Form2 throw exception as expected. > Why doesn't Form3? > > Form1: (do ((fn [] (throw (Exception. "oops")))) :ok) > Form2: (do ((fn [] (map #(when % (throw (Exception. "oops"))) > [true])))) > Form3: (do ((fn [] (map #(when % (throw (Exception. "oops"))) > [true]))) :ok) > > Thanks. > > --Kei --~--~---------~--~----~------------~-------~--~----~ 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 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 -~----------~----~----~----~------~----~------~--~---
