Treat ArrayType as covariant in its keys and values#2465
Merged
ondrejmirtes merged 2 commits intophpstan:1.10.xfrom Jun 17, 2023
Merged
Treat ArrayType as covariant in its keys and values#2465ondrejmirtes merged 2 commits intophpstan:1.10.xfrom
ondrejmirtes merged 2 commits intophpstan:1.10.xfrom
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You've opened the pull request against the latest branch 1.11.x. If your code is relevant on 1.10.x and you want it to be released sooner, please rebase your pull request and change its target to 1.10.x. |
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Member
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Is there a situation where the behaviour is different? Would be nice to have a test that fails without this change :) |
This should be safe because it is copy-on-write
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Contributor
Author
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Actually, there is. Added a test. It looks like edge cases, but I guess it could happen that this change introduces new errors for someone 😬 |
Member
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I just checked the last PR that touched this: https://github.com/phpstan/phpstan-src/pull/30/files And looks like all the tests that were added back then still pass :) Thank you! |
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Following up on #2464, I believe the implementation in ArrayType can be simplified accordingly