What are the best practices for using lambda expressions in C++14?

What are the best practices for using lambda expressions in C++14?

When using lambda expressions in C++14, consider the following best practices: 1. Use capture lists wisely to avoid unnecessary copies. 2. Prefer using auto for type deduction to keep your code clean. 3. Keep lambdas small and focused on a single task. 4. Use constexpr for compile-time evaluation when possible.

Can you explain what a capture list is?

A capture list in a lambda expression allows you to specify which variables from the surrounding scope should be accessible inside the lambda. You can capture by value or by reference, using [=] for value capture and [&] for reference capture.

What are the advantages of using lambdas over regular functions?

Lambdas provide several advantages: they can be defined inline, making the code more concise; they can capture local variables, which allows for more flexible and context-aware behavior; and they can be used as arguments to algorithms, enhancing code readability.

Are there any performance considerations I should be aware of?

Yes, while lambdas are generally efficient, capturing large objects by value can lead to performance overhead. It's often better to capture by reference when possible. Additionally, be mindful of the lifetime of captured variables to avoid dangling references.