I am playing around with maps and using wish lists as a learning tool. I
have a list of items in wish lists like this:
user=> items
[{:name "Item 1", :cost 20.0} {:name "Item 2", :cost 40.0}]
user=> wiggle-items
[{:name "Wiggle 1", :cost 20.0} {:name "Wiggle 2", :cost 40.0} [:name "Item
3" :cost 10.0]]
user=> (def wish-lists [
{:name "WL1" :items items}
{:name "WL2" :items wiggle-items}
]
)
#'user/wish-lists
user=> wish-lists
[{:name "WL1", :items [{:name "Item 1", :cost 20.0} {:name "Item 2", :cost
40.0}]} {:name "WL2", :items [{:name "Wiggle 1", :cost 20.0} {:name "Wiggle
2", :cost 40.0} [:name "Item 3" :cost 10.0]]}]
-------
I now want to add an item to one of the Wish Lists but am struggling with
assoc and assoc-in (which seems to be the one I need).
-------
user=> (def new-wi (conj wiggle-items [ :name "Item 3" :cost 10.0 ]))
#'user/new-wi
user=> (assoc-in wish-lists [:name "WL1"] [:name "WL1" :items new-wi])
IllegalArgumentException Key must be integer
clojure.lang.APersistentVector.assoc (APersistentVector.java:312)
As you can see the REPL gives me an error stating that the keys must be
Integers. Is that right? Or is my call process faulty?
Thanks in advance for your support.
ray
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