CC Chen wrote in post #1010408:
> Joey Zhou wrote in post #1010405:
>> bb and cc are a same object, you change cc, bb will also be changed.
>>
>> you should modify the 3rd line to:
>>
>> cc = bb.dup
>
>
>
> If on multi-dimension array?
>
> I try .dup it cant work!!
>
>
> Thanks,




aa2 = [[2,3],[4,5],[6,7]]
bb2 = [[11,22],[33,44],[6,7]]
cc2 = aa2.dup

i = 0
while i< 3

  j = 0
  while j < 2

    if (aa2[i][j]== bb2[i][j])

      cc2[i][j] = 88

    end
    j+=1
  end
  i+=1
end

print aa2,"\n"
print bb2,"\n"
print cc2




The output are:
aa2 = [[2,3],[4,5],[88,88]]
bb2 = [[11,22],[33,44],[6,7]]
cc2 = [[2,3],[4,5],[88,88]]


I want its output:
aa2 = [[2,3],[4,5],[6,7]]
bb2 = [[11,22],[33,44],[6,7]]
cc2 = [[2,3],[4,5],[88,88]]




The .dup seems just can work on one dimension array.
How to solve the problems on multi-dimension array?


Thanks,

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