🔗 YAML Anchors & Aliases

Anchors (&) and aliases (*) let you define a value once and reuse it anywhere in your YAML file. They’re insanely useful for keeping big configs DRY (Don’t Repeat Yourself).

📝 Example: Anchors & Aliases

Expanded config will appear here...

💡 Pro Tip: You can also reference single values like: title: &title "Dashboard" then reuse with main_title: *title.

📚 Summary

& creates an anchor (like a reusable template)
* references (aliases) the anchor wherever needed
&& optional, but you can merge whole mappings with &&defaults or &defaults
<<: *anchor merges the whole block at that point
Great for config defaults, database settings, or repeating values

🧠 Bonus: Reusing a Single Value

welcome_msg: &welcome "Hello, YAML World!"
home_msg: *welcome
about_msg: *welcome

Both home_msg and about_msg would get Hello, YAML World!.