Can I use a set as a key in a map and expect the correct results?

yes

the answer is a little more nuanced outside of the core clojure data types, and kind of depends what you mean by correct results, but yes

the core clojure stuff has value identity, so it combined in all number of ways stuff works great as map keys

if you go out in to java land, and have a clojure set of mutable LinkedLists, that will work less well

({#{:crunchy :savory :salty} "frito-lays" #{:crunchy :savory} "celery} #{:crunchy :savory :salty})

what would that yield

what you expect

"frito-lays" is what i expect

run it in a repl

hooray!

i'm trying to map from "intentions" to "things that happen"

but really, I want to map from sets of intentions

i'm happy that clojure is smart enough to let me do that

how long have you been with clojure hiredman?

I must have first started doing project euler problems in clojure sometime in 2009

I was employed as a clojure programmer from early 2010 to late 2015, and have been unemployed looking for a job since

question... how to force expanded macro to keep type hints?

I have macro which create function, this function expect java class a parameter, and to avoid reflection I need type hint

*creates

I don't want to call (vary-meta) or (with-meta) before using variable each time

How can I make the following macro print “ABC” instead of the symbol abc? (defmacro foo [abc#] (println abc#)) (def abc "ABC") (foo abc)

Ignore, I understand what I did wrong.

let me rephrase issue I raised a couple of hours ago: how to keep type hint which is under syntax quote untouched and not interpreted? Just treat it literally? I want to have: `(fn [^java.util.Random r] (.nextInt r)) -> (clojure.core/fn [^java.util.Random user/r] (.nextInt user/r))

I found this discussion around the topic, but I'm not sure if it addresses exactly my issue. https://groups.google.com/d/topic/clojure-dev/KTkQCj-TJx8/discussion

gowder: enlive can definitely parse strings