Unable to test for function name

[Stewart Gordon]

"Janice Caron" <caron800 at googlemail.com> wrote in message 
news:mailman.195.1196435027.2338.digitalmars-d at puremagic.com...
> This no longer works in D2.008.
>
>    struct A
>    {
>        void f() {}
>
>        static assert(is(f));
>    }
<snip>
> Under D2.007, the static assert would pass, because f exists.

Because f exits?  How did you come to that conclusion?  I thought the 
halting problem was unsolvable.

> In D2.008, the static assert fails. Why?

Because a bug has been fixed.  To evaluate to true, IsExpression requires 
that its operand is a semantically valid _type_.

> More importantly, how do I test that a function exists in D2.008?

static assert(is(typeof(f) == function));

(tested only on 1.023 and 2.007 to date)

Stewart.

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