Which of the following statements regarding Ruby variables is incorrect?

DBD::Mysql implements some driver-specific functions to be used In Ruby. Given below is one such function: dbh.func(:insert_id) => Fixnum What is the purpose of this function?

Which of the following options represent correct Ruby syntax?

Output of Ruby code? puts 'escape the sentence using '\\' puts 'That\'s right, this is a test'

What is the output of the Ruby code (with line numbers) shown below? 1. (0...5).each do |i| 2. puts 'Value of local variable is #{i}' 3. end

Statement X: Method names should begin with an uppercase letter. Statement Y: Methods should be defined before calling them, otherwise Ruby will raise an exception for undefined method invoking.

What is output of this Ruby code? foo = 'testing' puts defined? foo puts defined? $_

Statement 1: When a Ruby program terminates, all running threads are killed. regardless of their states. Statement 2: You can wait for a particular thread to finish by calling that thread

output of the following Ruby code ? puts 'The product of 5,10,15 is #{5*10*15}';

In a Ruby installed environment, what happens when 'lrb' is typed in the command prompt?