Build a powerful shopping cart in FlutterFlow! Learn e-commerce app development, custom class design, database integration, cart logic, product management, and advanced shipping + tax calculations. Discover step-by-step how to add widgets, output JSON, prevent duplicate carts, create custom functions, and lay the groundwork for shipping APIs like FedEx. Custom classes let you pack tight, complex logic into a few lines of code, replacing long-winded action chains for efficient, maintainable apps.
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