Rainer Deyke wrote:
On 11/6/2010 02:42, Walter Bright wrote:
Adam D. Ruppe wrote:
It wasn't until I added the invariant and in/out contracts to all the
functions
asserting about null that the problem's true cause became apparent.
Couldn't this happen to you with any datum that has an unexpected value
in it?
Suppose, for example, you are appending the numbers 1..5 to the array,
and somehow appended a 17. Many moons later, something crashes because
the 17 was out of range.
That's an argument for limited-range data types, not against
non-nullable types.
I see it more as an argument for any restricted subset of a data type. It could
be that you want just odd numbers in the array, and an even one crept in.
