>From the docs for raise-result-error:
"Like raise-argument-error
<http://docs.racket-lang.org/reference/exns.html?q=rename-file#%28def._%28%28quote._%7E23%7E25kernel%29._raise-argument-error%29%29>,
but the error message describe v as a “result” instead of an “argument.”"
Testing:
-> (raise-result-error 'funcname "msg" 'x)
; funcname: contract violation
; expected: msg
; received: 'x
; [,bt for context]
-> (raise-argument-error 'funcname "msg" 'x)
; funcname: contract violation
; expected: msg
; given: 'x
; [,bt for context]
These seem identical. What am I missing?
More generally, if I want to raise an exception inside a function what is
the preferred way to do it? My current approach is:
(struct exn:fail:evil #:super exn:fail)
(define (foo)
(when (evil-exists?)
(raise (exn:fail:evil "evil exists!" (current-continuation-marks))))
Is there a better solution?
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