I avoid making explicit distinctions between false and nil in my code. In Clojure a falsy value is either nil or false.
In interop I ensure that null and false when returned in the upper layers are made consistent (including Boolean objects set to false). Too much potential trouble in my opinion to let this slip everywhere in your code, it's not semantically coherent with Clojure. Luc P. > Be careful with the (filter identity ...) which will also remove "falses" > from seqs. > (filter identity [nil 2 3 nil false true 4]) > => (2 3 true 4) > Since (identity false) and (identity nil) returns respectively false and > nil they are BOTH rejected by filter. > > This could do the trick: > (filter (comp not nit?) [nil 2 3 nil false true 4]) > => (2 3 false true 4) > > On Wednesday, November 17, 2010 2:37:16 AM UTC+1, Luc wrote: > > > user=> (time (filter identity [ nil 1 2 nil 4])) > > "Elapsed time: 0.053219 msecs" > > (1 2 4) > > > > user=> (time (remove nil? [ nil 1 2 nil 4])) > > "Elapsed time: 0.065092 msecs" > > (1 2 4) > > > > Choose the flavor your prefer... > > > > Luc P. > > > > Glen Rubin <rubi...@gmail.com <javascript:>> wrote .. > > > What is the fastest way to remove nils from a sequence? > > > > > > I usually use the filter function, but I see there are other functions > > > like remove that should also do the trick. > > > > > > -- > > > You received this message because you are subscribed to the Google > > > Groups "Clojure" group. > > > To post to this group, send email to clo...@googlegroups.com<javascript:> > > > Note that posts from new members are moderated - please be patient with > > your first > > > post. > > > To unsubscribe from this group, send email to > > > clojure+u...@googlegroups.com <javascript:> > > > For more options, visit this group at > > > http://groups.google.com/group/clojure?hl=en > > Luc P. > > > > ================ > > The rabid Muppet > > > > > > -- > 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 -- Softaddicts<lprefonta...@softaddicts.ca> sent by ibisMail from my ipad! -- 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
