Dynamic Type Check?

[Brian Genisio]

I know I have done this in Java, but is there a way to do it in C++?

Type B and C inherit from type A.

In a function, I want to check an instance of A (which can also be B or
C), to see what it is, and move on... something like:

A something;
if( A.typeof(B) )
{
B somethingB = static_cast<B>( something);
// Do things with the B members
}
else if ( A.typeof(C) )
{
C somethingC = static_cast<C>( something);
// Do things with the C members
}
else
{
// Do things with the A members
}

I know I can accomplish something similar with virtual functions
(polymorphism), but can the above be done in any way?

Just curious.
Brian

[Michael Winter]

Re: Dynamic Type Check?

On Thu, 15 Jan 2004 15:01:57 -0500, Brian Genisio <BrianGenisio@y ahoo.com>
wrote:
[color=blue]
> I know I have done this in Java, but is there a way to do it in C++?[/color]

You do realise that this is a JavaScript group, don't you?

Try asking in comp.lang.c++

Mike

--
Michael Winter
M.Winter@blueyo nder.co.invalid (replace ".invalid" with ".uk" to reply)

[kaeli]

Re: Dynamic Type Check?

In article <4006f1ec$1@10. 10.0.241>, BrianGenisio@ya hoo.com enlightened
us with...[color=blue]
> I know I have done this in Java, but is there a way to do it in C++?
>[/color]

AFAIK, yes.

Go ask in a C group. :)


--
--
~kaeli~
If a turtle doesn't have a shell, is he homeless or naked?

http://www.ipwebdesign.net/wildAtHeart

http://www.ipwebdesign.net/kaelisSpace

[Michael Winter]

Re: Dynamic Type Check?

On Thu, 15 Jan 2004 20:46:21 GMT, Michael Winter
<M.Winter@bluey onder.co.invali d> wrote:
[color=blue]
> On Thu, 15 Jan 2004 15:01:57 -0500, Brian Genisio
> <BrianGenisio@y ahoo.com> wrote:
>[color=green]
>> I know I have done this in Java, but is there a way to do it in C++?[/color]
>
> You do realise that this is a JavaScript group, don't you?
>
> Try asking in comp.lang.c++[/color]

I forgot to say the answer is, yes.

Mike

--
Michael Winter
M.Winter@blueyo nder.co.invalid (replace ".invalid" with ".uk" to reply)

[Brian]

Re: Dynamic Type Check?


"Michael Winter" <M.Winter@bluey onder.co.invali d> wrote in message
news:opr1t3y8e0 5vklcq@news-text.blueyonder .co.uk...[color=blue]
> On Thu, 15 Jan 2004 15:01:57 -0500, Brian Genisio <BrianGenisio@y ahoo.com>
> wrote:
>[color=green]
> > I know I have done this in Java, but is there a way to do it in C++?[/color]
>
> You do realise that this is a JavaScript group, don't you?
>
> Try asking in comp.lang.c++
>
> Mike
>
> --
> Michael Winter
> M.Winter@blueyo nder.co.invalid (replace ".invalid" with ".uk" to reply)[/color]

ARGHHHHH!!!!!!!

I feel like a stooge. I actively follow two news groups...
alt.lang.javasc ript, and alt.lang.c++. I accadently posted to the wrong
group.

The reason I feel so bad, is because I always get frustrated with incorrect
postings to the different groups, weather it be java questions in the
javascript group, or MFC questions in the C++ group.

How about a C++ question in the javascript group?

Blah,
Brian