Function definition specifications

clojure.spec.alpha/fdef defines a specification for a function definition, providing specific specification for

• arguments passed when calling a function
• return value expected
• relationships between arguments and return value

Examples

The practicalli.database-access/new-account-holder function takes a customer details specification and returns an account-holder-id specification.

practicalli.database-access/new-account-holder

(spec/fdef practicalli.database-access/new-account-holder
  :args (spec/cat :customer ::customer-details)
  :ret ::account-holder-id)