How do I use lambda functions in Ruby?

How do I use lambda functions in Ruby?

In Ruby, a lambda is a way to define a block of code that can be stored in a variable and executed later. You can create a lambda using the lambda keyword or the -> syntax.

Can you show me an example of a lambda in Ruby?

Sure! Here's a simple example:

my_lambda = lambda { |x| x * 2 }
puts my_lambda.call(5)  # Output: 10

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

The main difference is that lambdas check the number of arguments passed to them, while procs do not. If you pass the wrong number of arguments to a lambda, it will raise an error.

Can I use lambdas as method arguments?

Yes, you can pass lambdas as arguments to methods, allowing for flexible and reusable code.