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DIY: Flatten Nested List Iterator

Understand how to implement a NestedIterator module in Elixir that flattens nested lists of integers. Learn to use init, next, and has_next functions to iterate through complex nested structures, preparing for real-world coding interview challenges.

Problem statement

You will be given a nested list of integers named nested_list. Each element will either be an integer or a list whose elements may also be integers or other lists. Your task will be to implement an iterator to ...