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Dart doesn't allow final class #987

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dev-aentgs opened this issue May 27, 2020 · 3 comments
Open

Dart doesn't allow final class #987

dev-aentgs opened this issue May 27, 2020 · 3 comments
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feature Proposed language feature that solves one or more problems

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@dev-aentgs
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Description:
Effective dart guidelines mention the following.
AVOID extending a class that isn’t intended to be subclassed.

Like in java, in this case allowing the class to be marked as final would prevent another class from inheriting it, dart doesn't allow final class.
What would be the side effects if this was allowed?
Would this be a breaking change?

effective dart #2440
@dev-aentgs dev-aentgs added the feature Proposed language feature that solves one or more problems label May 27, 2020
@dev-aentgs dev-aentgs mentioned this issue May 27, 2020
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@srawlins
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We do have a @sealed annotation for the present. But it's not a hard language feature, just for static analysis.

#349 is a related issue.

@Cat-sushi
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see also #11

@kevmoo
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kevmoo commented Jun 17, 2020

See proposed solution at #704

@munificent munificent mentioned this issue May 13, 2022
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@kevmoo @srawlins @Cat-sushi @dev-aentgs