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Named arguments

Passing inputs with their names attached so the call reads on its own and order doesn't matter.

Say it to an AI

TypeScript helper createShipment that books a parcel via carrier.book. Take a single parameter object (a ShipmentRequest type) rather than a long parameter list, so call sites read as named arguments and the two booleans can't be swapped.

How an expert would brief the stronger version of “Book a shipment”.

See it

Try it as a puzzle →

A warehouse app's helper that books a parcel with the carrier after an order is packed.

Study A · the stronger one
Study B · the weaker one

Why: A's call says 'insured: true' and 'signatureRequired: false' instead of a bare 'true, false'.

Related words

  • Single responsibility principle
  • Flag argument
  • Side effect
  • Parameter object
  • Long parameter list
  • Options object
  • Utils file
  • Domain type

Room 3 · Functions & structure

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