Uploaded image for project: 'JDK'
  1. JDK
  2. JDK-8194664

add Comparator.comparingArray and thenComparingArray

    Details

      Description

      A DESCRIPTION OF THE REQUEST :
      There isn't a good way to create an anonymous Comparator instance for arrays based on a property of the array object.
      For example if you have an array of Potatoes and you want to compare them using their weigth as comparable object, this is not easily possible.

      JUSTIFICATION :
      It's currently very ugly to create a anonymous Comparator class to compare arrays based on a key.
      For "normal" Objects this is possible using Comparator#comparing(Function, Comparator), not so much for arrays or any other type of collection
      There really should be a convinience method like all the other default convinience thenComaring methods implemented by the comparator interface


      CUSTOMER SUBMITTED WORKAROUND :
      With Java 9 the following should work:
      (array1, array2) -> Arrays.compare(array1, array2, Comparator.comparing(Function))

        Attachments

          Issue Links

            Activity

              People

              • Assignee:
                Unassigned
                Reporter:
                webbuggrp Webbug Group
              • Votes:
                0 Vote for this issue
                Watchers:
                3 Start watching this issue

                Dates

                • Created:
                  Updated: