What are some examples of lambda expressions in C++?

What are some examples of lambda expressions in C++?

Lambda expressions in C++ are a way to create anonymous functions. For example:

auto add = [](int a, int b) { return a + b; };
int result = add(5, 3); // result is 8

This creates a lambda that adds two integers.

Can you show me a more complex example?

Sure! Here's a more complex example that uses a lambda to sort a vector:

#include <vector>
#include <algorithm>

std::vector<int> numbers = {5, 2, 8, 1, 4};
std::sort(numbers.begin(), numbers.end(), [](int a, int b) { return a > b; });
// Now numbers is sorted in descending order.

What are the benefits of using lambda expressions?

Lambda expressions provide a concise way to write function objects, improve code readability, and can capture variables from their surrounding scope.