How do I use closures in Ruby?

How do I use closures in Ruby?

In Ruby, closures are implemented using blocks, procs, and lambdas. Would you like an example?

Yes, please provide an example of a closure.

Sure! Here's a simple example:

def make_multiplier(factor)
  return lambda { |x| x * factor }
end

double = make_multiplier(2)
puts double.call(5)  # Outputs: 10

This creates a closure that multiplies a number by a specified factor.

What’s the difference between a proc and a lambda?

Great question! The main differences are:

1. Lambdas check the number of arguments, while procs do not.
2. Lambdas return control to the calling method, while procs return from the enclosing method.