The problem with this approach is if your map is a record (e.g. made with defrecord) it will not work.
--- Joseph Smith [email protected] @solussd On Jan 28, 2013, at 8:31 PM, AtKaaZ <[email protected]> wrote: > I would use (map :keyword) myself, for that exact reason(because I'm into > fail-fast), but only when I know the map is expected to never be nil at this > point(but likely I'll do the program in such a way that this point won't be > reached with a nil map in the first place), so that if it happens that the > map is nil it will throw exception at this point and it will stop the bug > propagating further, but if I were to use (:keyword map) it may err later or > never. Sure I could use other ways to test for nil, but just in case I forget > to do so, (map :keyword) would save me where (:keyword map) would just > continue. I note that it's idiomatic clojure to use the latter variant (ie. > non-fail-fast). > > - says the guy(me) that hasn't done any program(in clojure anyway) > > > On Tue, Jan 29, 2013 at 3:09 AM, James Xu <[email protected]> > wrote: >> (:Keyword map) is preferred, because keyword itself can never be nil, while >> it's possible for map, you might be interested to have a look at: >> https://github.com/bbatsov/clojure-style-guide >> >> From: Jonathon McKitrick <[email protected]> >> Reply-To: <[email protected]> >> Date: Mon, 28 Jan 2013 18:00:01 -0800 (PST) >> To: <[email protected]> >> Subject: Best practice - (:keyword map) versus (map :keyword) >> >> Either one works, is there any kind of guideline on which to prefer, when? >> Or is it entirely personal preference? It seems each way could be more >> readable in different circumstances.... >> -- >> -- >> 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/groups/opt_out. >> >> >> -- >> -- >> 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/groups/opt_out. > > > > -- > Please correct me if I'm wrong or incomplete, > even if you think I'll subconsciously hate it. > > -- > -- > 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/groups/opt_out. > > -- -- 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/groups/opt_out.
