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By applying the access modifier : Public , Private and Protected access Modifier.
Iterator is handled using keyword 'each' in ruby.
Ex:
number=[11,12,13]
then we can use iterator as
number.each do |i|
puts i
end
Above prints the values of an array $no which is accomplished using iterator.
A new scope for a local variable is introduced in the toplevel, a class (module) definition, a method defintion. In a procedure block a new scope is introduced but you can access to a local variable outside the block.
The scope in a block is special because a local variable should be localized in Thread and Proc objects.
Classes,Objects,Inheritance,Singleton methods,polymorphism(accomplished by overriding and overloading) are some oo concepts supported by ruby. Multiple inheritance supported using Mixin concept.
for..in
untill..end
while..end
do..end
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