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RUBY - BASIC


Ruby

  1. Ruby is an Object Oriented Programming language developed in 1993, by Yukihiro Matsumoto of Japan.

  2. Ruby is a server-side scripting language just like Ruby.

  3. Ruby can be easily embedded into an existing HTML.

First Ruby Application 


puts "Hello World";

Printing 'Hello World' is as simple as the above line.


Also the print statement can be written using the below statement : 


print "Hello World";

Note : The only difference between 'puts' and 'print' is, 'puts' prints an extra line after each line whereas 'print' does not.

With puts


Example : 



	puts "Hello World.";
	puts "A Beautiful City."


Output :



  Hello World.
  A Beautiful City.

With print


Example : 



	print "Hello World.";
	print "A Beautiful City."


Output :



  Hello World.A Beautiful City.

Where do we write Ruby related code?


The codes in Ruby should be written inside a file with extension '.rb'.


So, we will be writing the above code to print Hello World inside a file named FirstApplication.rb.


FirstApplication.rb


Example : 



puts "Hello World";



Now, to execute the above code, we have to type the following in the command prompt : 


Ruby FirstApplication.rb

Output :



  Hello World


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