GitHub user danielsun1106 opened a pull request: https://github.com/apache/groovy/pull/831
GROOVY-8901: Add DGSM `countDistinct[By]`, `sum[By]`, `avg[By]` You can merge this pull request into a Git repository by running: $ git pull https://github.com/danielsun1106/groovy enhance_collectors2 Alternatively you can review and apply these changes as the patch at: https://github.com/apache/groovy/pull/831.patch To close this pull request, make a commit to your master/trunk branch with (at least) the following in the commit message: This closes #831 ---- commit 2b85777550e2610cbf9321f0b8e57862a26f854a Author: danielsun1106 <realbluesun@...> Date: 2018-11-23T16:32:53Z GROOVY-8901: Add DGSM `countDistinct[By]`, `sum[By]`, `avg[By]` ---- ---