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Add 'Primary constructor' to glossary#13033

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glossary-primary-constructor
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Add 'Primary constructor' to glossary#13033
sfshaza2 wants to merge 1 commit intomainfrom
glossary-primary-constructor

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@sfshaza2 sfshaza2 commented Feb 4, 2026

Adds a definition for 'Primary constructor' to the glossary, focusing on its usage in Dart extension types.

@sfshaza2 sfshaza2 requested a review from a team as a code owner February 4, 2026 22:18
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Summary of Changes

Hello @sfshaza2, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request enhances the project's documentation by introducing a new glossary term. The addition aims to clarify the concept of "Primary constructor," specifically highlighting its application within Dart's extension types, thereby improving the comprehensibility of related technical documentation.

Highlights

  • Glossary Enhancement: A new entry for "Primary constructor" has been added to the glossary.yml file, providing a detailed definition, short description, relevant links, and categorizing labels.

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Changelog
  • src/data/glossary.yml
    • Added a new term 'Primary constructor' including its short and long descriptions, related external links to Dart documentation, and 'dart' and 'language' labels.
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@sfshaza2 sfshaza2 requested review from conooi and mit-mit February 4, 2026 22:19
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Code Review

This pull request adds a definition for 'Primary constructor' to the glossary. The definition is good, but it's slightly outdated as it only mentions extension types. I've suggested an update to include primary constructors for classes, which were introduced in Dart 3.4, and to add a relevant documentation link.

Comment on lines +297 to +309
long_description: |-
A _primary constructor_ is a concise way to declare a constructor
directly in the type declaration.

Currently, this feature is only available for [extension types][].
It allows you to define the underlying representation object
and bind it to a field in one step.

[extension types]: https://dart.dev/language/extension-types
related_links:
- text: "Extension types constructors"
link: "https://dart.dev/language/extension-types#constructors"
type: "external"
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medium

The description for primary constructors is slightly outdated. Since Dart 3.4, primary constructors are also available for classes, not just extension types.

I'd suggest updating the description to include classes and adding a link to the relevant documentation for class-based primary constructors to make the glossary entry more accurate and complete.

  long_description: |-
    A _primary constructor_ is a concise way to declare a constructor
    directly in the type declaration.

    Primary constructors can be used with [classes][] and [extension types][].
    For classes, they allow you to define fields and initialize them from
    constructor parameters in one step. For extension types, they allow you
    to define the underlying representation object and bind it to a field.

    [classes]: https://dart.dev/language/constructors#primary-constructors
    [extension types]: https://dart.dev/language/extension-types
  related_links:
    - text: "Primary constructors for classes"
      link: "https://dart.dev/language/constructors#primary-constructors"
      type: "external"
    - text: "Extension types constructors"
      link: "https://dart.dev/language/extension-types#constructors"
      type: "external"

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Visit the preview URL for this PR (updated for commit 885f2ef):

https://flutter-docs-prod--pr13033-glossary-primary-constructo-qinhfcxj.web.app

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