C++: Lambda Expressions vs Function Pointers

What are the main differences between lambda expressions and function pointers in C++?

Lambda expressions are anonymous functions that can capture variables from their surrounding scope, while function pointers are variables that store the address of a function. This allows lambdas to be more flexible and easier to use in certain contexts.

Can you give me an example of when to use a lambda expression instead of a function pointer?

Sure! If you need to sort a collection with a custom comparison, using a lambda makes it easy to define the comparison inline without needing a separate function.

Are there any performance differences between the two?

Generally, lambda expressions can be optimized better by the compiler, especially when they capture variables. However, the performance difference is often negligible for most use cases.

What about readability? Which one is more readable?

Lambda expressions often enhance readability by keeping the logic close to where it's used, while function pointers can make the code more fragmented.