What potential problems and dangers may arise when implementing and using lambda functions in your code?

When using lambda functions in C++, the following problems and dangers may arise:

• Memory leaks: if the lambda captures pointers or resources by value, but management of them is not considered, leaks are possible.
• Lifetime of captured variables: variables captured by reference may go out of scope, but the lambda will continue to access them, leading to undefined behavior.
• Debugging difficulties: lambdas can complicate stack tracing and understanding of the code, especially if used extensively.
• Performance: excessive use of lambdas can lead to increased code size and compilation time.

Example of danger with capture by reference:

int* ptr = new int(10);
auto lambda = [&]() { return *ptr; };
delete ptr; // ptr is deleted
int val = lambda(); // undefined behavior, as ptr points to freed memory