class Array

def to_f
#	0.upto(self.length-1) do |v|
#		self[v]=self[v].to_f
#	end
	self.collect!{|v| v.to_f}
	self
end

def to_i
#	0.upto(self.length-1) do |v|
#		self[v]=self[v].to_i
#	end
	self.collect!{|v| v.to_i}
	self
end

end #class Array