Inject is a hot reloading workflow helper for Swift applications that enables you to modify running code and see changes reflected immediately without rebuilding and restarting your app.
The tool solves the productivity drain of lengthy compile-rebuild-restart cycles during development. It wraps InjectionIII, an existing injection framework, to provide a streamlined developer experience. By adding a single line of code to your views, you enable live code editing for UIKit, AppKit, or SwiftUI screens. The approach works by allowing you to edit your application code while it runs in the simulator and have those changes take effect in real time, eliminating the need to recompile, redeploy, and re-navigate to your previous location in the app.
The tool suits any Swift developer working on iOS, macOS, or other Apple platforms who spends significant time iterating on UI and logic. It requires initial project setup including linker flags and installation of the InjectionIII application, but once configured, it operates as a no-op in production builds since the injected code is stripped by LLVM during non-debug compilation. This means you can leave Inject integrated into your codebase indefinitely without any production overhead or need for conditional compilation.
Development activity shows consistent engagement with the codebase through regular commits addressing issues and improvements. The project maintains responsiveness to user-reported problems and feature requests. Documentation is thorough, with detailed setup instructions and explanations of the underlying hot reloading technique provided in the README and linked articles.
