On Thu, May 24, 2012 at 10:56 AM, Jonathan T. Niehof <jnie...@lanl.gov>wrote:
> On 05/23/2012 05:31 PM, T J wrote: > > > It seems that there are a number of ways to check if an array is a view. > > Do we have a preferred way in the API that is guaranteed to stay > > available? Or are all of the various methods "here to stay"? > > We've settled on checking array.base, which I think was the outcome of a > stackoverflow thread that I can't dig up. (I'll check with the guy who > wrote the code.) > > Just as a quick word to the wise. I think I can recall a situation where this could be misleading. In particular, I think it had to do with boolean/fancy indexing of an array. In some cases, what you get is a view of the copy of the original data. So, if you simply check to see if it is a view, and then assume that because it is a view, it must be a view of the original data, then that assumption can come back and bite you in strange ways. Cheers! Ben Root
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