How do I use callbacks with EventMachine?

How do I use callbacks with EventMachine?

Using callbacks in EventMachine allows you to handle events asynchronously. You can define a callback method and pass it to the EventMachine methods.

Can you give me an example of a callback in EventMachine?

Sure! Here's a simple example:

EventMachine.run do
  EventMachine.add_timer(1) do
    puts 'Timer finished!'
  end
end

In this case, the callback is the block passed to add_timer.

What if I want to handle multiple events?

You can register multiple callbacks for different events. For instance, you can use add_periodic_timer for recurring events or add_server for handling incoming connections.

Are there any best practices for using callbacks?

Yes, keep your callbacks small and focused, avoid nesting them too deeply, and consider using named methods instead of inline blocks for better readability.