Hi Renata,
The problem with your code is that it is using *map* at the top level,
which is a function that returns a lazy sequence. You are asking clojure to
do something like:
*Take each number n in inviteds and create a sequence of hash maps, where
each hash map has n as a key and 1 as it's value.*
But what you really want is a function at the top level that returns a hash
map. As Colin shows, you can use *into* (here is a slightly different way
than the one he used):
*Take each number in inviteds and create a sequence of pairs. Each pair
should have the number as it's first value, and 1 as the second. Then take
those pairs, and "pour" them into a hash map.*
(->> inviteds
(map (fn [number] (vector number 1)))
(into {}))
You could also do it via *reduce*:
*Start with an empty hash map, then assoc each number in inviteds with 1 as
it's value*:
(reduce (fn [m number] (assoc m number 1))
{}
inviteds)
Cheers,
Mauricio
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