Github user mattf-horton commented on the issue: https://github.com/apache/metron/pull/687 So a bunch more comments came in while I was writing the above. Nick's comment about enrichments using assignment already of course modifies my comment about Profilers, etc. Just making it uniform would give users a lot less to wonder about. As for := vs =, it's not so terrible to have both as exact synonyms. This gives you both your preferred aesthetics and backward compatibility.
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