• "Chris Pons" <cmpons gmail.com> Mar 05 2012
• Pedro Lacerda <pslacerda gmail.com> Mar 05 2012
• "Jonathan M Davis" <jmdavisProg gmx.com> Mar 05 2012

"Chris Pons" <cmpons gmail.com> writes:

Is it possible to check the type of an object to a class name?

//Something like this:
Class test
{
//...
}

assert(is(anonObject == typeof(test))

Pedro Lacerda <pslacerda gmail.com> writes:

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This works:

assert(typeid(anonObject) == typeid(test));

Pedro Lacerda



2012/3/5 Chris Pons <cmpons gmail.com>

 Is it possible to check the type of an object to a class name?

 //Something like this:
 Class test
 {
 //...
 }

 assert(is(anonObject == typeof(test))


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<div>This works:</div><div><br></div>assert(typeid(anonObject) =3D=3D typei=
d(test));<br clear=3D"all"><div><br></div>Pedro Lacerda<br><br>
<br><br><div class=3D"gmail_quote">2012/3/5 Chris Pons <span dir=3D"ltr">&l=
t;<a href=3D"mailto:cmpons gmail.com" target=3D"_blank">cmpons gmail.com</a=
&gt;</span><br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8e=




Is it possible to check the type of an object to a class name?<br>
<br>
//Something like this:<br>
Class test<br>
{<br>
//...<br>
}<br>
<br>
assert(is(anonObject =3D=3D typeof(test))<br>
</blockquote></div><br>

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"Jonathan M Davis" <jmdavisProg gmx.com> writes:

On Tuesday, March 06, 2012 01:37:05 Chris Pons wrote:
 Is it possible to check the type of an object to a class name?
 
 //Something like this:
 Class test
 {
 //...
 }
 
 assert(is(anonObject == typeof(test))


If you want to check whether a particular object is of a particular type at 
runtime, then cast and check whether it's null. If you want to know the 
_exact_ type of an object, then use typeid.

class A
{}

class B : A
{}

class C : B
{}

void main()
{
 A obj = new C;
 assert(cast(A)obj);
 assert(cast(B)obj);
 assert(cast(C)obj);
 assert(typeid(obj) != typeid(A));
 assert(typeid(obj) != typeid(B));
 assert(typeid(obj) == typeid(C));
}

- Jonathan M Davis