Map allows transforming collections by applying a function to each element, resulting in a new collection of the same structure, while flatMap flattens nested structures into a unified collection.
The flatten function is useful for collapsing collections of collections, such as a List of Lists, into a single List by eliminating one level of nesting.
In scenarios with nested structures, flattening helps simplify the data representation, whether it's dealing with lists, options, or futures, making data easier to work with.
The output of a map operation will preserve the original structure of the collection, producing a collection of the same type, while flatMap results in a potentially different structure.
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