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require/  typed
require-typed-struct
7.4.0.9

13 Compatibility Languages

Typed versions of the
and
languages. The
language is equivalent to the
language.

syntax

(require/typed m rt-clause ...)

 
rt-clause = [r t]
  | 
[struct name ([f : t] ...)
     struct-option ...]
  | 
[struct (name parent) ([f : t] ...)
     struct-option ...]
  | [opaque t pred]
     
struct-option = #:constructor-name constructor-id
  | #:extra-constructor-name constructor-id
Similar to require/typed, but as if #:extra-constructor-name make-name was supplied.

Similar to using the struct keyword with require/typed.