i've noticed a pattern in explanations in clojure that interface and runtime
are related. Is that the point being made here? Make expensive things hard
or at least explicit?
Maybe instead of nth, since that causes controversy,
call it "find-nth" or something?
On Wed, Apr 22, 2009 at 12:58 P
On Mon, Apr 20, 2009 at 5:17 PM, Hugh Winkler wrote:
>
> On Mon, Apr 20, 2009 at 1:59 PM, David Nolen wrote:
>> Maps aren't ordered so this isn't a good idea anyway.
>
> It's a good idea if you have a sorted map. My example should have used
> sorted-map.
>
>> The reason first/second work is beca
On Mon, Apr 20, 2009 at 5:17 PM, Hugh Winkler wrote
>
>
> Thanks! I think 'nth ought to behave just like 'first and 'second,
> don't you? If it's a good idea for 'first it's a good idea for 'nth.
>
It does seems like a reasonable behavior for sorted-set and sorted-map, but
what else really? Also
On Mon, Apr 20, 2009 at 1:59 PM, David Nolen wrote:
> Maps aren't ordered so this isn't a good idea anyway.
It's a good idea if you have a sorted map. My example should have used
sorted-map.
> The reason first/second work is because they call seq on the collection.
> (key (nth (seq {:a 1 :b 2 :
Maps aren't ordered so this isn't a good idea anyway.
The reason first/second work is because they call seq on the collection.
(key (nth (seq {:a 1 :b 2 :c 3}) 1)) -> :b
On Mon, Apr 20, 2009 at 2:51 PM, hughw wrote:
>
> Hi all,
>
> Why should 'first and 'second work on maps, but not 'nth?
>
> u
Hi all,
Why should 'first and 'second work on maps, but not 'nth?
user> (key (first {:a 1 :b 2 :c 3}))
:a
user> (key (nth {:a 1 :b 2 :c 3} 0))
; Evaluation aborted.
java.lang.UnsupportedOperationException: nth not supported on this
type: PersistentArrayMap (NO_SOURCE_FILE:0)
[Thrown class clo
