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 named and defined separately.

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 functions as arguments to algorithms or when capturing local variables.

Are there any performance differences between the two?

In general, lambda expressions can be as efficient as regular functions, but they may introduce slight overhead due to capturing variables. However, the difference is often negligible.