-----Original Message-----
From: full-disclosure-admin@lists.netsys.com
[mailto:full-disclosure-admin@lists.netsys.com]On Behalf Of Paul Schmehl
...
But it shouldn't be the job of the writer of a subroutine to verify the
inputs. The writer of a subroutine defines what the appropriate inputs to
that routine are, and it's up to the *user* of that subroutine to use it
properly. The entire concept behind OOP is that you cannot know what's in
the "black box" you're using. That makes it incumbent on you as the
*user*
of a subroutine to use the correct inputs and to *verify* those inputs
when
necessary.
That is the most backward thing I have ever heard. So you are saying all I
need to do as a programmer is tell you not to pass a negative number/null
pointer/un-initialized value... to my function and I am off the hook. All I
can say is that I am glad utdallas doesn't have you teaching programming.
The fact that you are unaware what lies inside the black box in no way
relieves the responsibility of the designer of the black box to make sure
that it behaves predictably under all input cases.