Comments (2)
At a minimum, I think the $reduce() function should be extended to also pass $index as an optional argument.
+1
In addition to the optional 3rd argument of array index, the signature for the callback function should include an optional 4th argument which is the array being iterated over. This would be consistent with the ECMAScript behavior of reduce. Passing the array index and the parent array would also be more consistent with the signature of the callback argument to $map.
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PR #362 addresses the arity-4 reduce function part of this. The indexOf function remains open and tracked by #187
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