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
Date: 2018-11-23T16:32:53Z
GROOVY-8901: Add DGSM `countDistinct[By]`, `sum[By]`, `avg[By]`
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