status: draft (2026-09-16)
keywords: Introspection
This SRFI focuses on the introspection and type inference sides of typing / checking.
It provides several useful procedures deriving types / checks for arbitrary data.
procedure-check-of and check-of work with checks, as in SRFI 253.
procedure-type-of and type-of work with implementation-specific types.
type->check allows one to turn implementation-specific types into portable checks,
while check->sexp provides a way to serialize opaque checks into more readable s-expressions.