majiayu000 Result Type Pattern (C-Specific)
Return struct containing success/failure status plus value or error. Explicit error handling without exceptions. Caller must check result.
ikigai Application
Core type: res_t used throughout:
res_t result = ik_cfg_load(ctx, path, &cfg);
if (!result.ok) {
// Handle error, result.error contains message
}
Macros:
OK(value)- Construct success resultERR(msg)- Construct error resultTRY(expr)- Propagate error if failedCHECK(cond, msg)- Return error if condition false
Benefits:
- Errors can't be ignored (must check
.ok) - Error context propagates up call stack
- No hidden control flow (unlike exceptions)
See: project/error_handling.md for patterns.