Message 169657 - Python tracker

Message169657

Author	skrah
Recipients	Alexander.Belopolsky, Arfrever, Dag.Sverre.Seljebotn, belopolsky, christian.heimes, georg.brandl, loewis, mark.dickinson, meador.inge, ncoghlan, pitrou, python-dev, scoder, skrah, vstinner
Date	2012-09-01.18:06:32
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<20120901180633.GA16743@sleipnir.bytereef.org>
In-reply-to	<50424964.8050806@v.loewis.de>

Content
> py> x = memoryview(array.array('B',b'cba')) I find the array example is different. The user has to remember one thing: memoryviews based on arrays don't hash. For memoryviews based on bytes one would have to remember: - 'B', 'c' and 'b' hash - only C-contiguous arrays hash - b'abc'[::-1] hashes, but memoryview(b'abc')[::-1] does not

Content

> py> x = memoryview(array.array('B',b'cba'))

I find the array example is different. The user has to remember one thing:
memoryviews based on arrays don't hash.

For memoryviews based on bytes one would have to remember:

  - 'B', 'c' and 'b' hash

  - only C-contiguous arrays hash

  - b'abc'[::-1] hashes, but memoryview(b'abc')[::-1] does not

History
Date	User	Action	Args
2012-09-01 18:06:33	skrah	set	recipients: + skrah, loewis, georg.brandl, mark.dickinson, ncoghlan, belopolsky, pitrou, scoder, vstinner, christian.heimes, Arfrever, meador.inge, Alexander.Belopolsky, python-dev, Dag.Sverre.Seljebotn
2012-09-01 18:06:32	skrah	link	issue15814 messages
2012-09-01 18:06:32	skrah	create