Which of the following is a CORRECT way to build a functional pipeline that first filters even numbers from a list nums and then squares them?

Question

Which of the following is a CORRECT way to build a functional pipeline that first filters even numbers from a list  nums  and then squares them?

Accepted Answer

Both (a) and (c) are valid pipelines, but (c) returns an iterator.

Answer

list(map(lambda x: x**2, filter(lambda x: x%2==0, nums)))

Answer

map(lambda x: x**2, filter(lambda x: x%2==0, nums))  (without  list )

Answer

list(filter(lambda x: x%2==0, map(lambda x: x**2, nums)))

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