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The First Class Function
A medium Python interview practice problem on DataDriven. Write and execute real python code with instant grading.
- Domain
- Python
- Difficulty
- medium
- Seniority
- mid, senior
Problem
Demonstrate that Python functions are first-class objects. Write a function apply_twice(f, x) that applies a given function f to x, then applies it again to the result, returning the final value. Then write a function compose(f, g) that returns a new function which applies g first then f. Return the results from a test batch.
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