C++: Lambda Expressions vs Functions

What are the main differences between lambda expressions and regular functions in C++?

Lambda expressions in C++ are anonymous functions that can capture variables from their surrounding scope, while regular functions are defined with a name and cannot capture variables directly.

Can you give me an example of a lambda expression?

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 lambda expressions instead of regular functions?

Use lambda expressions for short, inline functions, especially when passing them as arguments to algorithms or when you need to capture local variables.

Are there any performance differences between the two?

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