ruby中ObjectSpace.each_object得到的对象数组无法相减

Question

[code="ruby"]

s=[]
=> []
ObjectSpace.each_object.each{|x|s< => 27998
e=[]
=> []
ObjectSpace.each_object.each{|x|e< => 3813327

e - s
NoMethodError: undefined method %' for #<Hash:0x1012ce758>
from (irb):25:in-'
from (irb):25
from :0

[/code]

s和e不是两个数组么?为什么不能相减啊?

Answer 1

版本问题~~没其他的解决办法~