How do I use try-catch in Ruby?

How do I use try-catch in Ruby?

In Ruby, we use begin and rescue instead of try-catch. Here's a simple example:

begin
  # code that might raise an error
  risky_operation
rescue StandardError => e
  puts "An error occurred: \\#{e.message}"
end

Can you explain what happens in the rescue block?

Sure! The rescue block is executed if an error occurs in the begin block. It allows you to handle the error gracefully.

What types of errors can I rescue?

You can rescue specific error types like ZeroDivisionError, or use StandardError to catch most errors. It's best to be specific when possible.

Is there a way to ensure that some code runs after the rescue?

Yes! You can use the ensure block, which runs regardless of whether an error occurred or not. Here's an example:

begin
  risky_operation
rescue StandardError => e
  puts "Error: \\#{e.message}"
ensure
  puts "This will always run."
end