Mengendalikan Ralat dengan begin dan rescue

begin
  num = Integer('hello')
rescue ZeroDivisionError
  puts 'Cannot divide by zero!'
rescue ArgumentError
  puts 'Invalid number format!'
end

begin
  puts 10 / 0
rescue ZeroDivisionError => e
  puts "Error: #{e.message}"
end

begin
  puts 10 / 0
rescue ZeroDivisionError
  puts 'Cannot divide by zero!'
ensure
  puts 'This code runs no matter what.'
end

attempt = 0
begin
  attempt += 1
  puts 10 / 0
rescue ZeroDivisionError
  puts 'Attempting again...'
  retry if attempt < 2
end

begin
  puts 10 / 0
rescue ZeroDivisionError => e
  File.open('error.log', 'a') { |f| f.puts e.message }
end

begin
  num = Integer('hello')
rescue ArgumentError
  puts 'Oops! That was not a valid number.'
end