On Saturday, 27 January 2018 at 22:53:37 UTC, Ali Çehreli wrote:
On 01/27/2018 10:33 AM, kdevel wrote:
I suggest the deletion of the sentence "Use assert in
contracts."
Done.
Ali
Wait, no this isn't right, is it? Enforce should not be used in
contracts so the "Use assert in contracts" statement is correct
and should remain. I think the issue here is the OP is getting
confused between assert vs. exception.
Contracts (in D) are used to define and assert the agreed logic
behaviour of the program code.
Asserts catch logic bugs in the code that may lead to incorrect
behaviour at runtime. Exceptions are for exceptional cases that
crop up at runtime due to factors external to the code logic,
e.g. invalid external state such as failing to open a file or a
sensor not going off when it should because it is faulty.
Asserts can be removed in -release code because it is assumed the
logic has been asserted correct during debug builds and testing.
The same reason compilers now are starting to optimise out code
based on assert conditions.
bye,
lobo
