Message 173576 - Python tracker

Message173576

Author	rhettinger
Recipients	christian.heimes, djc, gregory.p.smith, rhettinger, serhiy.storchaka, vstinner
Date	2012-10-23.01:56:03
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1350957364.08.0.0990784388986.issue16286@psf.upfronthosting.co.za>
In-reply-to

Content
Rather than see statistics, I'm curious about what circumstances where the optimization would kick in. Interned strings are pre-hashed but they already benefit from an identity-implies-equality check. Dicts and sets already incorporate a check-hash-before-equality check. That raises the question of what strings ever have had their hash already computed if the string hasn't been interned or has been used in a dict or set? P.S. I rather like the optimization and don't want to discourage it. I'm just curious about what the current optimizations are missing.

Content

Rather than see statistics, I'm curious about what circumstances where the optimization would kick in.   Interned strings are pre-hashed but they already benefit from an identity-implies-equality check.  Dicts and sets already incorporate a check-hash-before-equality check.

That raises the question of what strings ever have had their hash already computed if the string hasn't been interned or has been used in a dict or set?

P.S.  I rather like the optimization and don't want to discourage it.  I'm just curious about what the current optimizations are missing.

History
Date	User	Action	Args
2012-10-23 01:56:04	rhettinger	set	recipients: + rhettinger, gregory.p.smith, vstinner, christian.heimes, djc, serhiy.storchaka
2012-10-23 01:56:04	rhettinger	set	messageid: <1350957364.08.0.0990784388986.issue16286@psf.upfronthosting.co.za>
2012-10-23 01:56:04	rhettinger	link	issue16286 messages
2012-10-23 01:56:03	rhettinger	create