Created
November 9, 2011 04:55
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class Person | |
include Comparable | |
attr_reader :name , :age | |
def initialize(name,age) | |
@name = name | |
@age = age | |
end | |
def <=>(other) | |
cmp = @age <=> other.age | |
if cmp != 0 | |
return cmp | |
else | |
return @name <=> other.name | |
end | |
end | |
end | |
class Group | |
include Enumerable | |
def initialize | |
@persons = [] | |
end | |
def add(person) | |
@persons << person | |
self | |
end | |
def each | |
@persons.each do |person| | |
yield person | |
end | |
end | |
end |
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