Binary Spectrum Geeks at work

- Jagadish. M

The interest of developer will always be towards learning new technologies. It’s secondary that whether in real-time you are going to use it in or not. One of the most popular and fastest growing technologies that I came across is Ruby on Rails (RoR).

Ruby on Rails was developed by David Heinemeier Hansson from his work on BaseCamp; a project management tool, which offers to-do lists, wiki-style web-based text documents, milestone management, file sharing, time tracking, and a messaging system.

Like many web frameworks, Rails uses the Model View Controller (MVC) architecture to organize applications.

• Each and Everything is Object: Even numbers in ruby are treated as object. Looking at the example, what output you can expect from this?

8.times {print “Guess what”} its prints Guess what 8 times.

• Powerful blocks: Code blocks can be passed as parameter to method. Following example prints out all the elements in an array

  jArray.each{|element| print element}

• Return is optional in Methods: In ruby return statement is optional in methods. The value of the last expression becomes the return value of that method. For example: 

  def testReturn n = 2 * 3 en

• Parallel Assignment in Ruby: We can change the multiple variables in one assignment statement. Swapping of two variables is the good example for it.   n1 = 1

  n2 = 3

   n1, n2 = n2,n1

• Everything in Ruby is open: Including the built-in classes, in ruby, additional methods can be added to the classes even at run-time also. For example: FixNum is the build in Data Type for all to which I added the method called old.                         

class Fixnum

def old return self-1

end

end

8.old  # prints 7

(The author, Jagadish.M, is a Software Engineer at Binary Spectrum).