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The All-in-One Guide to C++20

A Flavor of Python

Discover how to implement Python-inspired filter and list comprehension functionality in C++20 by leveraging the ranges library. Learn to apply predicates and transformations lazily on containers, enhancing your ability to write elegant, efficient C++ code that mimics Python's expressive style.

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In this lesson, I want to perform a small experiment. Can I add a flavor of Python into C++?

The programming language Python has the convenient functions filter and map.

  • filter: applies a predicate to all elements of an iterable and returns those elements for which the predicate returns true
  • map: applies a function to all elements of an iterable and returns a new iterable with the transformed elements

An iterable in C++ would be a type that you could use in a range-based for loop. Furthermore, Python lets you combine both functions in a list comprehension.

  • list comprehension:
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