Virtual Labs

What are higher-order functions in Python?

a: Functions that accept and/or return other functions Explanation

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b: Functions that operate on lists of numbers Explanation

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c: Functions that are defined inside other functions Explanation

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d: Functions that are decorated with a "@staticmethod" decorator Explanation

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Why would you want to use a higher-order function in Python?

a: To make your code more complex and difficult to read Explanation

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b: To save time when writing code Explanation

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c: To make your code more modular and easier to maintain Explanation

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d: To avoid using built-in Python functions Explanation

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In the context of higher-order functions, what is a call back function?

a: A function that is called only once Explanation

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b: A function that is called by another function Explanation

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c: A function that is defined inside another function Explanation

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d: None of the above Explanation

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Which of the following is an example of a higher-order function in Python?

a: print() Explanation

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b: len() Explanation

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c: map() Explanation

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d: All of the above Explanation

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Which of the following statements is true about higher order functions in Python?

a: They can only take other functions as parameters Explanation

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b: They can only be called by other functions Explanation

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c: They can take another function as a parameter or return a function as a result Explanation

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d: They can only return values, not functions Explanation

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What are decorators in Python?

a: A way to define and reuse complex functions Explanation

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b: A way to add extra functionality to existing functions Explanation

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c: A way to create new built-in functions Explanation

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d: A way to convert functions to methods Explanation

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Which of the following is a valid example of a higher-order function in Python?

a: def my_func(x): return x+1 Explanation

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b: def my_func(func, x): return func(x) Explanation

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c: def my_func(x, y): return x+y Explanation

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d: def my_func(): pass Explanation

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Which of the following is an example of a function that takes a function as an argument and returns a function as its result?

a: def my_func(f): return lambda x: f(x) Explanation

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b: def my_func(f): return f(3) Explanation

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c: def my_func(f): return f Explanation

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d: def my_func(): pass Explanation

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Higher Order Functions