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Function for the maximum index of vector in clojure

Hi I'd like to ask how to get the maximum value of index from Vector in clojure?

(def dummyvector [190 260 300 310 250])

I have dummyvector here, index 0 = 190, 1 = 260 ... I know the maximum is index 4 = 250. Does clojure have function to get the index value of 4?

Solution

  • Please see the list of documentation in this template project, especially Getting Clojure, Brave Clojure, and the Clojure CheatSheet.

    As for your particular question, just type something like:

    > (count [5 4 3 2 1])
5

    You can then use the dec function (decrement by 1) to get 4.

    > (dec (count [5 4 3 2 1]))
4

    If you are instead trying to search for an arbitrary value in the list, you may wish to use Java interop like:

    (.indexOf  [0 2 4 1 3 5]  4) => 2