Well, yea, you can "look for" methods with a Void return type. You
can use Class.getMethods() and then use the Method.getReturnType() on
each method returned to find them. Also, as of 1.5 you can get the
generic return type too.
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On May 8, 2008, at 10:07 AM, Florijan Stamenkovic wrote:
Don't know about the "looking up" part... AFAIK return types are not
a part of the method signature in Java, also indicated by Class API,
whose "getMethod..." stuff does not ask for the return type as a
parameter...
Think that Void class it has more to do with the Metod class'
getReturnType() method...
Or am I missing something?
F
On May 08, 2008, at 07:12, Galen Rhodes wrote:
The "Void" class came into being to support Reflection. So that
you could look for methods whose return type was "void".
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Galen Rhodes
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On May 7, 2008, at 10:07 PM, Chuck Hill wrote:
On May 7, 2008, at 7:01 PM, Michael Scott wrote:
Thanks Stephanie and Mike.
NSSelector<Void> works fine, and it makes the code clearer.
Any idea while the language has this Void class? Something to do
with void/null/”” Strings?
The JavaDocs say "The Void class is an uninstantiable placeholder
class to hold a reference to the Class object representing the
Java keyword void." It has been there since 1.1, so it has been
needed before.
Chuck
On 8/5/08 2:55 AM, "Mike Schrag" <[EMAIL PROTECTED]> wrote:
This compiles, at least ... Good to know.
NSDictionary<String, Void> a = new NSMutableDictionary<String,
Void>();
ms
On May 7, 2008, at 1:37 PM, Stephane Guyot wrote:
Michael,
did you try the type Class Void ? something like Void.Type ?
HTH,
Stephane
Le 7 mai 08 à 09:35, Michael Scott a écrit :
NSSelector<Object> works fine. But it is a bit wonky.
Perhaps Java should allow 'null' as a type argument.
Probably a bit much to ask just to make an old NextStep class
more
consistent.
On 7/5/08 2:11 PM, "Anjo Krank" <[EMAIL PROTECTED]> wrote:
Try to cheat an use <Object>?
Am 07.05.2008 um 04:12 schrieb Michael Scott:
NSSelector has been generified (generifried?) so that the
return
type of the method it calls must be specified as a type
parameter.
So,
NSSelector<String> selector = new
NSSelector<String>(“testMethod”);
Can be used to call the following method which returns a
String
(regardless on what class the method resides):
public String testMethod() {
return “testing, testing, 1, 2, 3 ...”;
}
But what if the method returns void?
public void testMethod2() {
// do something fab
}
What type argument should be used to instantiate
NSSelector<T>?
Or have I missed something fundamental?
Cheers
Michael Scott
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