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Comment by kaptainscarlet | Hacker News Reader

Why do you need the extra variables when you can pass function expressions into other function calls?

It just turns out you can't always do that in a real codebase. For example see here:

  https://github.com/apache/couchdb/blob/23efd8e5b1aa96ef01640fec03a5fedc945ba8b9/src/couch_mrview/src/couch_mrview_http.erl#L228