Comment on Interviews Can Be a Terrible Way to Identify Good ProgrammersparentComments−wccrawford14yI can read just enough of that that it confuses me why it doesn't work. Care to explain?−glogla14yThe problem is, that (equal 1 1) -> t (equal '(1 2) '(1 2)) -> t (eq 1 1) -> t (eq '(1 2) '(1 2)) -> nil because eq tests for the same symbol, while equal test for the same list. Member uses eq, not equal.−eadvgf14yIf we are talking Common Lisp, the default test is actually EQL. ((eq 1 1) is not necessarily T).−wccrawford14yAh, I see. Thanks.
Comments
I can read just enough of that that it confuses me why it doesn't work. Care to explain?
The problem is, that
because eq tests for the same symbol, while equal test for the same list. Member uses eq, not equal.If we are talking Common Lisp, the default test is actually EQL. ((eq 1 1) is not necessarily T).
Ah, I see. Thanks.