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

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

When using lambda expressions in C++, consider the following best practices: 1. Keep them concise and focused. 2. Use captures wisely to avoid unnecessary copies. 3. Prefer using auto for type deduction. 4. Ensure they are easily readable and maintainable.

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, which determines how the lambda interacts with those variables.

What are some common use cases for lambda expressions?

Common use cases for lambda expressions include sorting collections, implementing callbacks, and defining custom algorithms in STL functions like std::for_each.

Are there any performance considerations I should be aware of?

Yes, be cautious with captures by value, as they can lead to unnecessary copies. Also, consider the overhead of using lambdas in performance-critical sections of code.