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Description
We should have a method that finds the difference of two objects (any keys that are present in the second object are removed from the first), like this:
helpful.differenceOfObjects({"a": 1, "b": 2}, {"b": 3, "c": 4}) => {"a": 1}or:
helpful.differenceOfObjects({"a": 1, "b": 2}, {"a": 3, "b": 4}) => {}or:
helpful.differenceOfObjects({"a": 1, "b": 2}, {"c": 3, "d": 4}) => {"a": 1, "b": 2}