Wednesday, April 18, 2007

区间对象(Range object)

[0..2].each do |i|
puts "i = #{i}"
end

# "0..k" 表示一个区间对象(Range object), 而 "[0..k]"表示一个只有单个区间类型的元素的数组. 例如, 如上运行输出0..2

(0..2).each do |i|
puts "i = #{i}"
end

#上面就会输出3行:
i = 0
i = 1
i = 2

No comments :