Pattern: Use of inject/reduce
Issue: -
This rule looks for inject/reduce calls where the passed in object is
returned at the end and so could be replaced by each_with_object without
the need to return the object at the end.
# bad
[1, 2].inject({}) { |a, e| a[e] = e; a }
# good
[1, 2].each_with_object({}) { |e, a| a[e] = e }