On 03/07/2012 10:08 PM, Jonathan M Davis wrote:
On Wednesday, March 07, 2012 20:44:59 Chad J wrote:
On 03/07/2012 10:21 AM, Steven Schveighoffer wrote:
You can use sentinels other than null.
-Steve
Example?
Create an instance of the class which is immutable and represents an invalid
value. You could check whether something is that value with the is operator,
since there's only one of it. You could even make it a derived class and have
all of its functions throw a particular exception if someone tries to call
them.
- Jonathan M Davis
Makes sense. Awfully labor-intensive though. Doesn't work well on
classes that can't be easily altered. That is, it violates this:
- Do not modify the implementation of UnreliableResource. It's not always
possible.
But, maybe it can be turned it into a template and made to work for
arrays too...
