Having trouble deleting first item in list
- From: "jonathon" <j_mckitrick@xxxxxxxxxxx>
- Date: 28 Jun 2005 07:05:00 -0700
This one has me confused. I have a list of objects. Here is the
function to delete one of them:
(defun delete-transaction (index)
:documentation "Delete a transaction."
(decf index)
(with-tm *tm*
(setf transactions (delete (nth index transactions) transactions)))
; (delete (nth index transactions) transactions))
(format t "(tm) Transactions left: ~A~%" (count-transactions)))
'*tm*' is an object that holds transaction objects.
'transactions' is the list of transaction objects internal to *tm*.
This version of the function works as expected. But when I uncomment
the one line and comment out the setf line, it will never delete the
first (zeroth) entry. Why is this?
.
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