A data-driven UICollectionView framework for building fast and flexible lists.
Objective-C Objective-C++ Other
Latest commit ee4f3c9 Apr 22, 2017 @rnystrom rnystrom committed with facebook-github-bot Balance reload delete and insert calls
In 073fc07 we deduped delete calls, but since we convert reloads into delete+insert when only deduping deletes, we end up with unbalanced delete+insert calls.

Unit test added reproduced a crash we see internally. Fix passes the test.

Not adding a changelog entry since this is a new regression fixed between releases. #trivial

Issue fixed: t17539856

- [x] All tests pass. Demo project builds and runs.
- [x] I added tests, an experiment, or detailed why my change isn't tested.
Closes #687

Differential Revision: D4933545

Pulled By: rnystrom

fbshipit-source-id: d38a900a99b1aa796dd654ddedb42e3cb4ef4378


Build Status Coverage Status Pods Version Platforms Carthage Compatible

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

Main Features
πŸ™… Never call performBatchUpdates(_:, completion:) or reloadData() again
🏠 Better architecture with reusable cells and components
πŸ”  Create collections with multiple data types
πŸ”‘ Decoupled diffing algorithm
βœ… Fully unit tested
πŸ” Customize your diffing behavior for your models
πŸ“± Simply UICollectionView at its core
πŸš€ 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 master branch in the Instagram app.


  • Xcode 8.0+
  • iOS 8.0+
  • tvOS 9.0+
  • macOS 10.10+ (diffing algorithm components only)
  • Interoperability with Swift 3.0+



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

pod 'IGListKit', '~> 2.0.0'


For Carthage, add the following to your Cartfile:

github "Instagram/IGListKit" ~> 2.0.0

For advanced usage, see our Installation Guide.

Getting Started


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


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


Please see the CONTRIBUTING file for how to help out. 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.


IGListKit is BSD-licensed. We also provide an additional patent grant.

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