Unable to test for function name

[Matti Niemenmaa]

Stewart Gordon wrote:
>> 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.

Exists, not exits.

>> 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));

static assert (is(typeof(f)); should suffice.

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