How do I capture a lambda function in C++?

Can you explain how to capture variables in a lambda function in C++?

Sure! In C++, you can capture variables in a lambda function using the capture clause. You can capture by value or by reference.

What's the difference between capturing by value and by reference?

Capturing by value means a copy of the variable is made, while capturing by reference means the lambda uses the original variable.

Can you give me an example of both?

Absolutely! For capturing by value: auto lambda = [x]() { return x + 1; }; For by reference: auto lambda = [&x]() { return x + 1; };.

What happens if the captured variable goes out of scope?

If you capture by value, the copy remains valid. If you capture by reference and the variable goes out of scope, it leads to undefined behavior.