Performance of Lambdas vs Functions in C++

What are the performance differences between lambdas and regular functions in C++?

Lambdas can be more efficient than regular functions due to their ability to capture variables and inline optimizations. However, the performance can vary based on usage context.

Can you give an example where lambdas outperform functions?

Sure! In scenarios where you need to pass a function as an argument, lambdas can be more efficient because they can capture local variables and avoid the overhead of function calls.

Are there any downsides to using lambdas?

Yes, lambdas can lead to code that is harder to read if overused, and they may introduce complexity in debugging. Additionally, they can have a larger memory footprint if capturing many variables.

How do I decide when to use a lambda instead of a regular function?

Use lambdas when you need a quick, inline function, especially for short operations or when passing functions as arguments. For more complex logic, regular functions may be clearer.