Implements state-safe C development by replacing global variables with explicit context struct pointers.
The Context Struct Pattern skill provides Claude with specific architectural guidance for C programming, emphasizing the use of explicit state management over global variables. By mandating that the first parameter of every function is a context struct (such as ik_repl_ctx_t), this skill enables developers to eliminate global state, support multiple concurrent instances of a module, and significantly improve code testability through dependency injection. It is an essential pattern for building robust, scalable C systems like REPLs, terminal emulators, and complex runtime environments where state isolation is critical.
Key Features
01Explicit dependency management for modular code
02Support for multiple concurrent module instances
03Elimination of global state in C modules
041 GitHub stars
05Enhanced unit testing via mock context injection
06Standardized function signatures with context-first parameters
Use Cases
01Refactoring legacy C code to remove global variable dependencies
02Building testable C libraries that require explicit state isolation
03Designing modular REPL or terminal components for C applications
