What are blocks in Ruby and can you give me some examples?

What are blocks in Ruby and can you give me some examples?

Blocks in Ruby are chunks of code that can accept input and be executed. They are often used with methods.

Can you show me a simple example of a block?

Sure! Here's a basic example:

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

This will print 2, 4, and 6.

What about using blocks with methods?

You can pass a block to a method like this:

def greet
  yield
end

greet { puts 'Hello, World!' }

This will output 'Hello, World!'.

Are there any other ways to use blocks?

Yes! Blocks can also be used with iterators, and you can use them with the map method to transform arrays.