Matt Martz
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9773a1f289
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Add a Singleton metaclass, use it with Display (#48935)
* Add a Singleton class, use it with Display
* update six import
* Move remaining failes to display singleton
* Fix rebase issues
* Singleton improvements
* Add code-smell for 'from __main__ import display'. ci_complete
* s/self/cls/g
* Add docs for no-main-display
* Address linting issues
* Add changelog fragment. ci_complete
* Implement reentrant lock for class instantiation in Singleton
* Add Display singleton porting guide
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2018-11-20 17:06:51 -06:00 |
Martin Krizek
Seuf