Hi,
2010/6/1 Ryan <ryg...@gmail.com>
> I have the following
> user=> (class ({:one "1"} {:two "2"} {:three "3"}))
> clojure.lang.PersistentArrayMap
>
> but am a little confused as to how best to access the data
>
> for example:
> user=> (count ({:one "1"} {:two "2"} {:three "3"}))
> 1
>
try directly in the REPL ({:one "1"} {:two "2"} {:three "3"})
I guess you should get
{:three "3"}
because you're not defining a list of maps, you're calling a map by key.
The called map is {:one "1"}, the key provided to the call is {:two "2"},
and you also provide a default value as well: {:three "3"}
!
> user=> (first ({:one "1"} {:two "2"} {:three "3"}))
> [:three "3"]
> user=> (last ({:one "1"} {:two "2"} {:three "3"}))
> [:three "3"]
>
> what I really want is something like this:
> user=> (conj {:one "1"} {:two "2"} {:three "3"})
> {:three "3", :two "2", :one "1"}
>
>
You want assoc, or into.
> Can someone possibly explain what I am misunderstanding about
> ArrayMaps so I can fill in some of my knowledge gaps?
>
>
Nothing specific to ArrayMaps. It's implementation detail.
--
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
