Overview
The FFI package provides utilities for Dart to interact with native code written in languages like C, Rust, or other systems-level languages. It enables calling functions, accessing data structures, and managing memory across language boundaries, making it ideal for performance-critical operations or integrating existing native libraries. This package is essential when Dart needs to interface with low-level system APIs or optimize computation-heavy tasks. It supports multiple platforms including Android, iOS, macOS, Windows, and Linux.
Use cases
- Calling native C libraries
- Integrating Rust code into Dart apps
- Optimizing performance-critical code
- Accessing system-level APIs
- Interfacing with existing native binaries
Key features
- Platform-agnostic native interoperability
- Support for structs and function pointers
- Memory management via native types
- Cross-platform compatibility
- Direct binding to C-style APIs
Suitable for
- Developers using native libraries
- Performance-sensitive applications
- System-level integrations
- Rust or C developers targeting Flutter
- Apps requiring direct hardware access
Considerations
- Requires knowledge of native code
- Potential for crashes if misused
- Manual memory management risks
- Limited type safety compared to pure Dart
- Steeper learning curve for beginners