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The reason for Racket and its large library to embrace a large standard is the amount of things that Racket doesn't have to implement itself because it's in the

• bitwize 6y ago
  That's not how standards work. The standard just specifies something; you still have to implement it, unless the standard supplies a reference implementation which you can make work with your code. There's a reason why the quasi-standards for extensions to Scheme are called Scheme Requests for Implementation. Neither R6RS nor any other RnRS standard contain a reference implementation, so whether it's in R6RS or not, the Racket developers have to implement it. RnRS standards do tend to have a description of Scheme's formal semantics, and SRFI documents, by convention, contain a reference implementation of the proposed API where possible.