issue_comments: 152269091

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https://github.com/pydata/xarray/issues/630#issuecomment-152269091 https://api.github.com/repos/pydata/xarray/issues/630 152269091 MDEyOklzc3VlQ29tbWVudDE1MjI2OTA5MQ== 1322974 2015-10-29T18:07:54Z 2015-10-29T18:07:54Z CONTRIBUTOR

If you put arrays in a Dataset, you should not count on modifications to the arrays in the Dataset trickling back to the original arrays.

I think the most confusing part is that this the modifications will trickle down sometimes -- even though I'd prefer them to be always propagated, I would still mind much less if they were never propagated. At the end of the day it's not my call, feel free to close the issue if you want.

 
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