What problem does it solve? Go OOP and LLD tutorial content in go.json can contain broken code examples, inaccurate design pattern implementations, missing test coverage, and mismatched console output. This Skill systematically reviews each tutorial section, verifies every code example compiles and runs, and applies fixes so learners get correct, runnable material. ## Core Features & Use Cases - Code Verification: Extracts every code example from a section, compiles it with go build, runs it, checks concurrent code with the race detector, and compares actual output to documented output. - Design Pattern & LLD Accuracy Checks: Validates GoF pattern implementations, Go idioms (consumer-defined interfaces, sync.Once singletons), thread-safety, and LLD requirements coverage for problems like caches, rate limiters, and circuit breakers. - Content Quality Enforcement: Verifies textbook-style explanations, mandatory output blocks after code, test examples for intermediate sections, ASCII diagrams, and JSON validity. - Use Case: Ask to review the lld-cache section; the Skill extracts the section, runs all code examples, flags a missing eviction test and an incorrect output block, fixes both, and re-verifies. ## Quick Start Ask the AI to review and fix the lld-cache section in the Go tutorial using the review-go-oop skill.