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guilleiguaran/stateful.rb

Created May 8, 2015 04:15
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stateful.rb
def average_age
return 0 if @group.empty?
sum = @group.map{|x| x.age}
.reduce(0.0){|sum, x| sum + x}
sum / @group.size
end
Raw
stateless.rb
def average_age(group)
return 0 if group.empty?
sum = group.map{|x| x.age}
.reduce(0.0){|sum, x| sum + x}
sum / group.size
end
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