Domain Primitives in Go: One Type Per Real-World Concept
Domain primitives in Go advocate for creating a unique type for each real-world concept to prevent bugs and enforce correctness at compile time. Using generic types like strings for multiple purposes can lead to errors such as parameter swapping, duplicated validation, and lost domain logic. By defining types with private fields, validated constructors, and domain-specific methods, developers gain safety, clarity, and reusability across the codebase.
- ▪Every real-world concept should have its own Go type with a validated constructor.
- ▪Using strings for multiple concepts can cause bugs like parameter swaps and inconsistent validation.
- ▪Domain primitives provide compile-time guarantees and encapsulate behavior like validation and formatting.
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try { if(localStorage) { let currentUser = localStorage.getItem('current_user'); if (currentUser) { currentUser = JSON.parse(currentUser); if (currentUser.id === 425693) { document.getElementById('article-show-container').classList.add('current-user-is-article-author'); } } } } catch (e) { console.error(e); } Gabriel Anhaia Posted on May 1 Domain Primitives in Go: One Type Per Real-World Concept #go #architecture #ddd #backend Book: Hexagonal Architecture in Go Also by me: Thinking in Go (2-book series) — Complete Guide to Go Programming + Hexagonal Architecture in Go My project: Hermes IDE | GitHub — an IDE for developers who ship with Claude Code and other AI coding tools Me: xgabriel.com | GitHub You're reviewing a pull request.
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