Macros. Metadata is a perfect way to annotate symbols that need to be processed in some specific way or to provide extra information when debugging. Many serious macros I've written use metadata on forms & symbols.
David On Mon, Nov 12, 2012 at 11:55 PM, Takahiro Hozumi <fat...@googlemail.com>wrote: > > Metadata is a really useful feature, and it's been helping me a lot. > Could you show me concrete example? > I still don't understand the value of metadata and rarely use it > except type hint. > I saw active using metadata on some project(e.g. postal[1]), but I > think regular hashmap instead of metadata is also good enough for the > purpose. > > [1] https://github.com/drewr/postal > > Cheers, > -Takahiro > > On Nov 13, 6:01 am, JvJ <kfjwhee...@gmail.com> wrote: > > Metadata is a really useful feature, and it's been helping me a lot. It > > seems like a flash of genius on the part of Mr. Hickey. I'm wondering if > > similar concepts exist in other programming languages that inspired it, > or > > if it's unique to Clojure. Just a matter of curiosity, really. > > -- > 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 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
