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https://issues.apache.org/jira/browse/AVRO-215?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12779919#action_12779919
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Jeff Hammerbacher commented on AVRO-215:
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Note also that memoization is a common use of decorators, and decorators are
available in Python 2.4+. If we're comfortable requiring Python 2.4 (seems
reasonable to me), we can explore the use decorators here.
> Add docstring indicating utility of "seen" parameter to __hash__ and __eq__
> in schema.py
> ----------------------------------------------------------------------------------------
>
> Key: AVRO-215
> URL: https://issues.apache.org/jira/browse/AVRO-215
> Project: Avro
> Issue Type: Improvement
> Components: python
> Reporter: Jeff Hammerbacher
>
> As pointed out by Doug on the mailing list, the point of the "seen" parameter
> is to "contain the set of schemas that are on the stack. Schemas can be
> circular, so this is required to prevent infinite loops."
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