What are the common use cases for procs and lambdas in Ruby?

What are the common use cases for procs and lambdas in Ruby?

Procs and lambdas are both used for creating anonymous functions in Ruby. Common use cases include callbacks, event handling, and encapsulating behavior.

Can you explain the difference between procs and lambdas?

Sure! The main difference is in how they handle return statements. A return in a lambda will exit the lambda, while a return in a proc will exit the enclosing method.

When should I use a proc instead of a lambda?

You might use a proc when you want a more flexible function that can return from the surrounding context, while lambdas are better for strict argument checking.

Can you give me an example of using a lambda?

Absolutely! Here's a simple example: my_lambda = ->(x) { x * 2 }; my_lambda.call(5) will return 10.

What about using procs in Ruby?

You can define a proc like this: my_proc = Proc.new { |x| x + 1 }; my_proc.call(5) will return 6.