Visibility of a method

By default methods within a class in Ruby is PUBLIC. But as we know, ruby supports meta programming and hence a new/updated code can be generated on fly during the runtime.
here is a way to make the public class methods to private.

class Myclass
  def mymethod
    puts "I am public and wishing to be private!"
  end
  private :mymethod
  # OR also can be written as
  # private_class_method :mymethod
end

obj = Myclass.new
obj.mymethod
# private method `mymethod' called for # (NoMethodError)

Similary public :mymethod or public_class_method :mymethod

Rank of programming languages & TIOBE

The TIOBE Programming Community index gives an indication of the popularity of programming languages. The index is updated once a month. The ratings are based on the number of skilled engineers world-wide, courses and third party vendors. The popular search engines Google, MSN, Yahoo!, and YouTube are used to calculate the ratings. Observe that the TIOBE index is not about the best programming language or the language in which most lines of code have been written.

The index can be used to check whether your programming skills are still up to date or to make a strategic decision about what programming language should be adopted when starting to build a new software system. The definition of the TIOBE index can be found here

Rank Mar 2008	Rank Mar 2007	Delta in Position	Programming Language	Ratings Mar’08	Delta Mar’07	Status
1	1	=	Java	20.651%	+2.61%	A
2	2	=	C	15.593%	-0.04%	A
3	5	++	Visual Basic	10.795%	+2.65%	A
4	4	=	PHP	10.138%	+0.68%	A
5	3	–	C++	9.776%	-1.33%	A
6	6	=	Perl	5.781%	-0.64%	A
7	7	=	Python	4.593%	+0.70%	A
8	9	+	C#	4.143%	+0.78%	A
9	12	+++	Delphi	2.697%	+0.94%	A
10	10	=	Ruby	2.661%	-0.11%	A
11	8	—	JavaScript	2.462%	-1.02%	A
12	14	++	D	1.107%	-0.16%	A
13	13	=	PL/SQL	0.747%	-0.80%	A
14	11	—	SAS	0.630%	-1.22%	A-
15	18	+++	COBOL	0.615%	-0.03%	A-
16	21	+++++	Pascal	0.554%	-0.01%	B
17	17	=	Ada	0.485%	-0.17%	B
18	16	–	Lisp/Scheme	0.434%	-0.29%	B
19	19	=	FoxPro/xBase	0.423%	-0.18%	B
20	25	+++++	Lua	0.385%	-0.01%	B