What are the best practices for using closures in Ruby?

What are the best practices for using closures in Ruby?

When using closures in Ruby, it's important to keep them concise and focused. Avoid capturing too many variables to prevent memory bloat.

Can you give an example of a closure in Ruby?

Sure! Here's a simple example:

add = ->(x) { |y| x + y }
puts add.call(2, 3)  # Outputs 5

This closure captures the variable x.

What are some common pitfalls to avoid with closures?

Common pitfalls include capturing variables that change outside the closure, leading to unexpected behavior. Always be mindful of variable scope.

How can I test closures in my Ruby code?

You can test closures by writing unit tests that check the output for various inputs, ensuring they behave as expected.