What's the output of this Liquid code? Assume we have products and are in a collection. 🔍 ```liquid {% assign titles = collection.products | map: 'title' %} {{ titles | join: "-" }} ```

### Explanation The `map` filter extracts property values from an array of objects: ```liquid # collection.products is an array of product objects: collection.products = [ { "title": "T-shirt", "price": "20.00",... }, { "title": "Hoodie", "price": "45.00",... }, { "title": "Jeans", "price": "60.00",... } ] # map extracts the 'title' property from each product collection.products | map: 'title' # => ["T-shirt", "Hoodie", "Jeans"] # join combines the array with a delimiter | join: "-" # => "T-shirt-Hoodie-Jeans" ``` The `map` filter is commonly used with `collection.products` to extract product properties like `title`, `price`, `url`, etc. Reference: [Shopify Liquid map filter](https://shopify.dev/docs/api/liquid/filters/map)