I use DrRacket 6.6 and use #lang sicp , everything looks good but the function error does not exist, it says:
error: unbound identifier in module in: error
Why?
error function in lang sicp in DrRacket does not bound
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The documentation for the sicp package does not include the identifier
errorso it is not a part of the language#lang sicp. The purpose of the sicp package is to give a R5RS namespace with some of the books special bindings in addition, however there is no mention of a procedure or special form callederrorin the book.Under the standard language in DrRacket,
#lang racket, and under the current standard Scheme,#!r6rs,erroris a procedure which can be used to signal an error (called exception in R6RS).Adding only
errorfromracket/base: