What are the best practices for using lambda expressions in C++17?

What are the best practices for using lambda expressions in C++17?

In C++17, some best practices for using lambda expressions include keeping them concise, using captures wisely, and avoiding unnecessary complexity.

Can you explain what captures are in lambda expressions?

Captures in lambda expressions allow you to access variables from the surrounding scope. You can capture by value or by reference.

What are the differences between capturing by value and by reference?

Capturing by value creates a copy of the variable, while capturing by reference allows the lambda to access the original variable directly.

Are there any performance considerations I should be aware of?

Yes, capturing by value can lead to performance overhead due to copying, especially for large objects. Use captures judiciously.

Can you give an example of a lambda expression in C++17?

Sure! Here's a simple example: auto add = [](int a, int b) { return a + b; }; This lambda adds two integers.