A data-driven UICollectionView framework for building fast and flexible lists.
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De-genericize IGListBindingSectionController for Swift migration
Summary:
## Plan
This module doesn't need A/B testing and will be migrated directly.

## This Diff
Removes the `__covariant ObjectType : id<IGListDiffable>` lightweight generic type parameter from `IGListBindingSectionController`. Swift generic types cannot be exposed to ObjC, so any generic ObjC class must lose its type parameter when converted to Swift. This degenerification is a required prerequisite for future Swift migration.

Changes:
- Removed the generic type parameter from the class header, replacing `ObjectType` with `id<IGListDiffable>` in the `object` property declaration
- Removed the generic specialization from the `IGContentAppreciationGiftSectionController` subclass header
- Simplified 87 Swift files that referenced `ListBindingSectionController<ListDiffable>` or `ListBindingSectionController<any ListDiffable>` or other specializations to plain `ListBindingSectionController`
- Added ObjC casts at 3 callsites where the `.object` property was used with specialized type access (`IGAudioSearchResultsViewController.mm`, `IGDSShowcaseListExampleModel.m`)
- Added Swift casts at callsites in `BCNComposerPostSectionController`, `BCNComposerViewController`, `BCNPostingStatusDatasource`, `BCNComposerAssetSectionController`, and `GiftsFeedSectionController` where `.object` was accessed as the previously-specialized type

Differential Revision: D104311510

fbshipit-source-id: 6f54a761aa70fc39ffcd789fe74e3d83609ef61f
2026-05-11 21:35:07 -07:00
.github Enable unit test suite for tvOS (#1649) 2025-12-11 00:46:38 -08:00
docs Updated the IGListKit docs to v5.2.0 (#1656) 2026-02-16 23:54:31 -08:00
Examples De-genericize IGListBindingSectionController for Swift migration 2026-05-11 21:35:07 -07:00
Guides Improve SwiftPM support (#1546) 2023-03-06 23:29:41 -08:00
IGListKit.xcodeproj Bring Test Coverage back to > 99% (#1654) 2026-01-27 21:10:09 -08:00
remodel-plugin Standarize the copyright notice in all source files 2023-04-06 02:44:16 -07:00
Resources Add new dark/light mode compatible logo 2024-05-08 07:32:12 -07:00
scripts Remove privacy manifest file and related build tooling 2024-04-26 00:43:54 -07:00
Source De-genericize IGListBindingSectionController for Swift migration 2026-05-11 21:35:07 -07:00
spm/Sources Fix missing project and SPM references (#1621) 2025-03-11 09:13:03 -07:00
Tests Fix heap corruption crash from concurrent array mutation during diff (#1578) 2026-04-30 21:33:49 -07:00
.gitignore Improve SwiftPM support (#1546) 2023-03-06 23:29:41 -08:00
.slather.yml Omit the test suite from code coverage stats 2023-04-17 20:41:49 -07:00
.swiftlint.yml Updated and reintegrated Danger into GitHub Actions CI 2023-02-28 18:53:02 -08:00
CHANGELOG.md Fix heap corruption crash from concurrent array mutation during diff (#1578) 2026-04-30 21:33:49 -07:00
CODE_OF_CONDUCT.md Adopt Contributor Covenant 2019-08-29 23:20:54 -07:00
Dangerfile Updated and reintegrated Danger into GitHub Actions CI 2023-02-28 18:53:02 -08:00
Gemfile Remove using CocoaPods to build IGListKit's test suite (#1641) 2025-10-06 08:21:43 -07:00
IGListDiffKit.podspec Remove privacy manifest file and related build tooling 2024-04-26 00:43:54 -07:00
IGListKit.podspec Remove privacy manifest file and related build tooling 2024-04-26 00:43:54 -07:00
IGListSwiftKit.podspec Remove privacy manifest file and related build tooling 2024-04-26 00:43:54 -07:00
LICENSE.md Standarize the copyright notice in all source files 2023-04-06 02:44:16 -07:00
Package.swift General fixes to restore GitHub CI (#1622) 2025-03-14 23:56:06 -07:00
README.md Updated the IGListKit docs to v5.2.0 (#1656) 2026-02-16 23:54:31 -08:00
README.zh.md Updated the IGListKit docs to v5.2.0 (#1656) 2026-02-16 23:54:31 -08:00

Build Status Coverage Status Pods Version Platforms Carthage Compatible


A data-driven UICollectionView framework for building fast and flexible lists.

Main Features
🙅 Never call performBatchUpdates(_:, completion:) or reloadData() again
🏠 Better architecture with reusable cells and components
🔠 Create collections with multiple data types
🔑 Decoupled diffing algorithm
Fully unit tested
🔍 Customize your diffing behavior for your models
📱 Simply UICollectionView at its core
🚀 Extendable API
🐦 Written in Objective-C with full Swift interop support

IGListKit is built and maintained with ❤️ by Instagram engineering. We use the open source version main branch in the Instagram app.

Multilingual translation

Chinese README

Requirements

  • Swift 5.1+
  • iOS 11.0+
  • tvOS 11.0+
  • macOS 10.13+ (diffing algorithm components only)
  • Interoperability with Swift 3.0+

Installation

CocoaPods

The preferred installation method is with CocoaPods. Add the following to your Podfile:

pod 'IGListKit', '~> 5.2.0'

Carthage

For Carthage, add the following to your Cartfile:

github "Instagram/IGListKit" ~> 5.2.0

Swift Package Manager

For Swift Package Manager:

To integrate using Xcode:

File -> Swift Packages -> Add Package Dependency

Enter package URL: https://github.com/Instagram/IGListKit, and select the latest release.

For advanced usage, see our Installation Guide.

Getting Started

Try out IGListKit by opening any of the sample apps available in the Examples directory.

Documentation

You can find the docs here. Documentation is generated with jazzy and hosted on GitHub-Pages.

To regenerate docs, run ./scripts/build_docs.sh from the root directory in the repo.

Vision

For the long-term goals and "vision" of IGListKit, please read our Vision doc.

Contributing

Please see the CONTRIBUTING file for how to help. At Instagram, we sync the open source version of IGListKit daily, so we're always testing the latest changes. But that requires all changes be thoroughly tested and follow our style guide.

We have a set of starter tasks that are great for beginners to jump in on and start contributing.

License

IGListKit is MIT-licensed.

The files in the /Examples/ directory are licensed under a separate license as specified in each file. Documentation is licensed CC-BY-4.0.

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