What is the purpose of the following hash method in Ruby?

hash.rehash

puts 'This is sentence 1.' BEGIN { puts 'This is sentence 2.' }

purpose of array.rassoc(key) array method in Ruby?

A thread shares all global. instance, and local variables that are in existence at the time the thread starts.

Assuming that d is an instance of Dir class:

Which of the following operators indicate continuation of a statement In Ruby?

Which of the following are correct?

The package that contains information about an exception is an object of class exception or is one of class exception's children . Every exception returns information to understand the nature of the exception. Which of the following are provided by exceptions?

Statement 1: A thread shares all global, instance, and local variables that are in existence at the time the thread starts. Statement 2: Ruby threads are totally out-of-process, and are implemented outside the Ruby interpreter.

In the Ruby programming language, 'true' is a type of :

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's Thread#wait method.