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Scala 3 language-specific patterns with ZIO, Cats Effect, and opaque types
Passed 19 of 22 test cases with the skill, and 18 of 22 without it.
2 fixed17 passed either way2 still failing1 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 2 test cases the skill fixed. Same model, same prompt, with and without the skill.
What command-line utility should be used to install the Scala 3 compiler, REPL, and build tools on a new developer workstation?
| Checked | Without skill | With skill |
|---|---|---|
| Uses cs install for installing the Scala toolchain. | Missed | Passed |
The instructions your model reads when the skill loads.
Cross-references: fp-principles | fp-domain-modeling | property-based-testing
cs install scala3-compiler scala3-repl sbt
sbt new scala/scala3.g8 && cd order-service
# Add zio, zio-test, scalacheck to build.sbt
sbt compile && sbt test
enum PaymentMethod:
case CreditCard(cardNumber: String, expiryDate: String)
case BankTransfer(accountNumber: String)
case Cash
case class Customer(
customerId: CustomerId,
customerName: CustomerName,
customerEmail: EmailAddress
)
Case classes provide structural equality, copy, and pattern matching for free.
test cases passed, vs 18 / 22 without
More skills from the same source and nearby in the registry, with their headline benchmark lift.