On Friday, 1 August 2014 at 02:46:48 UTC, Walter Bright wrote:
On 7/31/2014 1:36 PM, Tofu Ninja wrote:
On Thursday, 31 July 2014 at 19:12:04 UTC, Walter Bright wrote:
Integers are sortable, period. That is not "input".
Ok so sorted ints are not "input", what else is not "input"?
Where can I draw
the line? And if I do use assert on an input, that is what?
Undefined? I thought
D was not supposed to have undefined behavior.
I've answered this so many times now, I no longer have any new
words to say on the topic.
I'll say some word on this, then.
Yes, you cannot assert() that input has a specific value.
Programs that do this are provable not correct.
You can assert() that input has a specific value after the code
has made sure that it has a specific value. This means the
program is partially correct.
Input is a priori assumed to have any value allowed by the
context.
Argc has an implicit assume that provides axioms describing the
limits of int/C/unix/etc.
