What is the difference between blocks and closures in Ruby?

What is the difference between blocks and closures in Ruby?

In Ruby, a block is a chunk of code that can accept input and is passed to methods, while a closure is a block that captures the surrounding context.

Can you give me an example of a block in Ruby?

Sure! Here's a simple example:

[1, 2, 3].each do |number|
  puts number * 2
end

This block doubles each number in the array.

And what about closures? How do they work?

Closures in Ruby are often created using lambdas or procs. They can access variables from their surrounding scope even after that scope has finished executing.

Can you show me a closure example?

Absolutely! Here's an example using a lambda:

x = 10
my_lambda = -> { puts x }
my_lambda.call  # This will output 10

The lambda captures the variable x.