Programming Language: Ruby

3. 1993
2004
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2010
2005

5. (http://jruby.codehaus.org/)
JVM)
(http://www.ironruby.net/)

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9. - BINDING:
def binding_elsewhere
x = 20
return binding
end
remote_binding = binding_elsewhere
x = 10
eval("puts x")
eval("puts x", remote_binding)

10. Reflection:
class Person
end
def add_accessor_to_person(accessor_name)
Person.class_eval %Q{
attr_accessor :#{accessor_name}
}
end
irb>> person = Person.new
irb>> add_accessor_to_person :name
irb>> add_accessor_to_person :gender
irb>> person.name = "Peter Cooper"
irb>> person.gender = "male"
irb>> puts "#{person.name} is #{person.gender}"
--------------------------------------------class MyClass
def initialize
@my_variable = 'Hello, world!'
end
end
obj = MyClass.new
obj.instance_eval { puts @my_variable }

12. -Efficiency ?
- Isn’t widely used in Industry except for web apps
- Not Powerful as python ( Not biased :P )