deep_safe_navigation_chaining

🏗 Complex Chains with Safe Navigation and yield_self

Combine safe navigation (&.) with yield_self to elegantly guard and transform nested data structures without verbose nil checks.

user = fetch_user()  # may return nil

greeting = user&.profile&.settings&.theme&.yield_self do |theme|
  theme == 'dark' ? '🌙 Dark Mode Active' : '☀️ Light Mode'
end

puts greeting || '👤 Guest Mode'