Programming & technology

Inheritance is one of Object-Oriented concept. Since Ruby is an Object-Oriented Programming, it has implemented the Inheritance functionality.

#intialize global variable
$value = 0

class Parent
    def parent_value
        $value = 5
    end
end

class Child < Parent
    def child_value
        $value = 10
    end
end

child = Child.new

#calling parent_method using child object
base_value = child.parent_value

#calling child_method
derive_value = child.child_value

#display result
puts "Here's parent value: #{base_value}"
puts "Here's child value: #{derive_value}"

Sample Result:

Here just how’s  to declare global, class, instant, and local variables in Ruby:

$global_variable = "global variable"

class First
    @@class_variable = 0

    def display_global_variable
        puts "#{$global_variable} access from class 'First'"
    end

    def class_variable
        @@class_variable += 1
        puts "value of class variable : #{@@class_variable}"
    end
end   

class Second
    def initialize(id,name)
        @id = id # id is a local variable
        @name = name # name is a local variable
    end

    def display_global_variable
        puts "#{$global_variable} access from class 'Second'"
    end

    def display_instance_variable
        puts "display value of instance variable id = #{@id}, name = #{@name} "
    end
end

#instantiate object
first = First.new
second = Second.new(1, "borey")

#Demonstrate on class variable
first.display_global_variable
second.display_global_variable
puts "\n"

#Demonstrate on class variable
first.class_variable
first.class_variable
puts "\n"

#Demonstrate on instance variable
second.display_instance_variable

Here’s the result after code is executed:

Today, just trying to find gedit’s alternative editor. gedit is an editor running on Linux which is good for coding Javascript as it has many useful plug in. Since my workstation at home doesn’t run on Linux, I have find another alternative to gedit. After googling about a half hour, I found out about jEdit. After installing jEdit & install some extra plug in, i can see that jEdit is good as compare to gedit.

Well, i suppose some people have heard or already own an account on this site.

What is Delicious?

Delicious is a social bookmarking service that allows users to tag, save, manage and share web pages from a centralized source. With emphasis on the power of the community, Delicious greatly improves how people discover, remember and share on the Internet.

Things you can do with Delicious

Bookmark any site on the Internet, and get to it from anywhere

Instead of having different bookmarks on every computer, Delicious makes it easy to have a single set of bookmarks kept in sync between all of your computers. Even if you’re not on a computer you own, you can still get to your bookmarks on the Delicious website.

Share your bookmarks, and get bookmarks in return

If your friends use Delicious, you can send them interesting bookmarks that they can check out the next time they log in. Of course, they can do the same for you. As you explore the site and find interesting users, you can use our Subscriptions and Network features to keep track of the Delicious tags and users you find most interesting.

Discover the most useful and interesting bookmarks on the web

See what’s hot with Delicious users by checking out our popular tags. By looking at popular bookmarks for a tag, you’ll be able to discover the most interesting bookmarks on the topics you’re most interested in. Browse bookmarks on just about anything from the best programming tips to the most popular travel sites, all in an easy to read format.

source: http://delicious.com

As required by work, i have started new programming language and tool. During this whole week, i have read book and doing some practice. I have found out that C# is similar to java. With the background from java, i can easy get the concept.

Also i have read on NHibernate. It’s a framework that help to connect to SQL Database, which i need to use to develop my project.