C++ Lambda vs Function: What's the Difference?

What is the difference between a C++ lambda and a regular function?

A C++ lambda is an anonymous function that can capture variables from its surrounding scope, while a regular function is defined with a name and cannot capture variables.

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

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

When should I use a lambda instead of a regular function?

Use a lambda when you need a quick, inline function, especially for short operations or when passing functions as arguments.

Are there any performance differences between using lambdas and functions?

Generally, there is no significant performance difference, but lambdas can be more efficient in certain contexts due to their ability to capture local variables.