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Editorial Team
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Asked: 2026-05-15T06:13:35+00:00

I’ve a vector of maps like this: [{:categoryid 1, :categoryname foo } {:categoryid 2,

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I’ve a vector of maps like this:

[{:categoryid 1, :categoryname "foo" } 
 {:categoryid 2, :categoryname "bar" } 
 {:categoryid 3, :categoryname "baz" }]

and would like to generate a map of maps like this for searching by categoryname 

{"foo" {:categoryid 1, :categoryname "foo" }, 
 "bar" {:categoryid 2, :categoryname "bar" }, 
 "baz" {:categoryid 3, :categoryname "baz" }}

How can I do this?

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1 Answer

  1. Editorial Team
    (reduce (fn [m {catname :categoryname :as input}]
          (assoc m catname input))
        {}
        [{:categoryid 1, :categoryname "foo" } 
         {:categoryid 2, :categoryname "bar" } 
         {:categoryid 3, :categoryname "baz" }])

    Better yet,

    (#(zipmap (map :categoryname %) %)
 [{:categoryid 1, :categoryname "foo" } 
  {:categoryid 2, :categoryname "bar" } 
  {:categoryid 3, :categoryname "baz" }])
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