More on ignoring errors

(defun safe-division (a b)

(if (zerop b) nil (/ a b)))

Ignore-errors useful when doing something useful but not necessary, and in the code fragment (read-user-init-file not defined here)

(multiple-value-bind (a b)

(ignore-errors (read-user-init-file))

(if b (format t "Problem reading init file, ~

Skipped.~%")))

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