Re: type secure error handling

Mark Tarver wrote:

(18+) (simple-trap (/ 4 0) 7)

division by zero

Uh oh. simple-trap insists on eagerly evaluating its arguments before
doing any trapping. The Lisp code from simple-trap is

(DEFUN simple-trap (V41 V42)
(trap V41 #'(LAMBDA (Error) #'(LAMBDA (Default) Default)) V42))

Is there any nice way of defining trap which will avoid this result?

Add something like delay/force? (See R5RS.)


Pascal

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