What are the differences between procs, lambdas, and methods in Ruby?

Can you explain the differences between procs, lambdas, and methods in Ruby?

Sure! In Ruby, methods are defined using the def keyword and are called with their name. Procs and lambdas are both types of closures, but they have some key differences.

What are the main differences between procs and lambdas?

The main differences are in how they handle return statements and argument checking. Lambdas check the number of arguments, while procs do not. Also, a return in a lambda returns from the lambda itself, while a return in a proc returns from the enclosing method.

Can you give me an example of each?

Absolutely! Here's a simple example:

• Method:

def greet(name)
  "Hello, \\#{name}!"
end

• Proc:

greet_proc = Proc.new { |name| "Hello, \\#{name}!" }

• Lambda:

greet_lambda = ->(name) { "Hello, \\#{name}!" }