On 3/17/20 8:04 AM, rikki cattermole wrote:
On 18/03/2020 12:59 AM, Steven Schveighoffer wrote:
I think he's looking for object pattern matching. i.e. you give it an
Object, and it runs a block of code based on the derived type.
In case this syntax is unknown:
if (MyObject1 myObject = cast(MyObject1)obj) {
...
} else if (MyObject2 myObject = cast(MyObject2)obj) {
...
} else {
...
}
Yes, look a few posts up, that was my recommendation.
I don't think there's a "pleasant" way to do this in D. You can do it
with delegates, but that's a bit uglier than a switch statement, and has
been rejected by the OP. However, I don't think the syntax requested is
going to be added to D, as it's an odd syntax:
case SomeType inst: // inst now defined as SomeType
So that's probably the best bet.
-Steve