On 10/10/19 6:47 PM, Just Dave wrote:
In C# you can do something like:


     if (obj is Person)
     {
         var person = obj as Person;
         // do stuff with person...
     }

where you can check the type of an object prior to casting. Does D have a similar mechanism? It's so widely useful in the C# realm that they even added syntactic sugar to allow:

     if (obj is Person person)
     {
         // do stuff with person...
     }

I would presume since D has reference objects there must exist some mechanism for this...

```D
      if (auto person = cast(Person) obj)
      {
          // do stuff with person...
      }
```

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