On Wed, 09 Feb 2011 14:59:33 -0500, useo <[email protected]> wrote:
== Auszug aus Steven Schveighoffer ([email protected])'s Artikel
On Wed, 09 Feb 2011 14:35:42 -0500, useo <[email protected]> wrote:
> Is it possible to create a template which only accepts functions
or
> delegates like this example:
>
> class Example(T : void function()) { // or ..(T : void delegate
())..
>
> T callback;
>
> }
>
> Where T is a function or a delegate...
>
> Thanks for every suggestion!
class Example(T) if (is(T == delegate) || is(T == function))
{
T callback;
}
-Steve
Is there any chance to do the same for methods like:
void example(T)() {
}
... something like:
void bindEvent(T)(if (is(T == delegate) || is(T == function)))()...
Yes, but you have the order mixed up.
void bindEvent(T)() if (is...)
In general form, a template constraint goes after the declaration, but
before the body of the template.
-Steve
