Loïc Sharma 384331e171
Migrate to list and builder Sliver convenience constructors (#173011)
In 2022, we introduced new convenience constructors like
`SliverList.builder` and `SliverList.list`. Unfortunately, LLMs like
Gemini seem to prefer the delegate pattern even when these convenience
constructors are usable. This updates Flutter's docs, code, and tests to
use these convenience constructors where possible. Hopefully this will
nudge LLMs to consider using the new APIs :)

I migrated 80% of the code by hand, and 20% using Gemini CLI. See
[go/loic-ai-log](http://goto.google.com/loic-ai-log) (Google internal)
for details.

There's a few locations that I wasn't able to migrate to the convenience
constructors due to missing APIs. I filed the following issues:

1. https://github.com/flutter/flutter/issues/173018
2. https://github.com/flutter/flutter/issues/173019

## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
- [x] I read the [Tree Hygiene] wiki page, which explains my
responsibilities.
- [x] I read and followed the [Flutter Style Guide], including [Features
we expect every widget to implement].
- [x] I signed the [CLA].
- [ ] I listed at least one issue that this PR fixes in the description
above.
- [x] I updated/added relevant documentation (doc comments with `///`).
- [x] I added new tests to check the change I am making, or this PR is
[test-exempt].
- [x] I followed the [breaking change policy] and added [Data Driven
Fixes] where supported.
- [ ] All existing and new tests are passing.

If you need help, consider asking for advice on the #hackers-new channel
on [Discord].

**Note**: The Flutter team is currently trialing the use of [Gemini Code
Assist for
GitHub](https://developers.google.com/gemini-code-assist/docs/review-github-code).
Comments from the `gemini-code-assist` bot should not be taken as
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useful you can update your code accordingly, but if you are unsure or
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<!-- Links -->
[Contributor Guide]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#overview
[Tree Hygiene]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md
[test-exempt]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#tests
[Flutter Style Guide]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md
[Features we expect every widget to implement]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md#features-we-expect-every-widget-to-implement
[CLA]: https://cla.developers.google.com/
[flutter/tests]: https://github.com/flutter/tests
[breaking change policy]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#handling-breaking-changes
[Discord]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Chat.md
[Data Driven Fixes]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Data-driven-Fixes.md
2025-08-04 22:32:22 +00:00
..
2024-12-19 20:06:21 +00:00
2024-12-19 20:06:21 +00:00