Clojure re-uses java.util.regex.Pattern objects. This object doesn't override equals method, so object references are always compared. But you can easily get pattern string from compiled pattern and then compare just them:
user=> (= (.pattern #"test") (.pattern #"test")) true Dňa streda, 26. februára 2014 12:55:17 UTC+1 Thomas napísal(-a): > > Hi Everyone, > > I am creating some regular expressions programmatically with re-pattern. > In order to avoid creating the same regex pattern again I want to check if > it already exists. But comparing regex pattern doesn't seem to be work: > > user=> (= #"test" #"test") > false > user=> (identical? #"test" #"test") > false > > Not surprised that identical? doesn't work to be honest, but "=" should > have worked IMHO > > Is there a way to do this? > > TIA > > Thomas > -- 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/groups/opt_out.
