[Pharo 8.0] Build #698: Improving performance of athens

There is a new Pharo build available!
 
The status of the build #698 was: SUCCESS.

The Pull Request #4464 was integrated: "Improving performance of athens"
Pull request url: https://github.com/pharo-project/pharo/pull/4464

Issue Url: https://github.com/pharo-project/pharo/issues/improving
Build Url: https://ci.inria.fr/pharo-ci-jenkins2/job/Test%20pending%20pull%20request%20and%20branch%20Pipeline/job/Pharo8.0/698/

Currently only cacheAt:ifAbsentPut: exists on Canvas, but wouldn't it be
nicer to expand it to expose/generalize for:at:ifAbsentPut: from
CairoBackendCache, rather than create two new class variables?

When most of the asAthensPaintOn: dispatch through surface, that seems a
nicer place to do the lookup (even though it rarely/ever change in
practice), no?

Cheers,
Henry



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