Beginner problem: casting in opCmp override

[Jonathan M Davis]

On Monday, July 08, 2013 23:21:59 Ugbar Ikenaki wrote:
> I'm trying to implement rational numbers with fully functioning
> comparison operators, but I can't seem to figure out why I'm
> getting this error and any help would be appreciated:
> 
> Error: cannot cast from object.Object to Rat
> 
> The code I have is as follows:
> 
> int opCmp( Object o ) {
> 	Rat other = cast(Rat) o; <--- this line throws the error
>          …
>          //stuff to return -1, 0, or 1 to opCmp with rational
> numbers for <, >=, etc.
>          …
> }
> 
> Thanks to anyone who can help!

You're going to need to provide more code than that. Without knowing anything 
about Rat, we can't help you.

On a side note, I point out that talking about compiler errors as being 
"thrown" is going to cause confusion, as throwing is something completely 
different.

- Jonathan M Davis