Hi Renata,
> How can I update the atom accounts in the field of operations?
>
> (def accounts (atom [{:id "7512a15b-0770-4a9b-a74b-389374b46461", :balance
> 0.0, :operations nil, :blocked false}
> {:id "7446cfe6-882c-4f25-bad1-5ed8c9aea994", :balance 0.0, :operations nil,
> :blocked false}
> {:id "3136860d-ab7f-4814-8f3b-2d18048db9b9", :balance 0.0, :operations nil,
> :blocked false}
> {:id "2dc20615-f1f7-4637-9602-ae9494689166", :balance 0.0, :operations nil,
> :blocked false}
> {:id "c6dccf4a-535c-4eba-8cfc-0554408de8bd", :balance 0.0, :operations nil,
> :blocked false}]))
>
> I tried this:
>
> (swap! accounts (fn [x] (update-in x [:operations] #(if (= (:id %)
> account-id) new-value))))
>
> and returns "key must be integer" because of [:operations]
the atom hold and array of accounts. In swap! you are trying to access one (!)
value in a key-path [:operations] but access to elements of an array is not
valid via a key-path but by using indexes.
What you are seemingly trying to do is to map over the contents of the array in
the atom which is not what you coded here.
- Axel
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