Re: [boost] [lambda] extension question

From: Peter Dimov (pdimov_at_[hidden])
Date: 2005-07-19 09:20:37

Joel de Guzman wrote:
> Jaakko Järvi wrote:
>> Yes, a null_type is passed to sig. This is because the signature of
>> the zero argument
>> lambda function (in lambda_functor class) signature is instantiated
>> always, regardless
>> of whether it is called or not. And there the argument list is just
>> null_type.
>> Hence, the return type deduction is not allowed to cause a
>> compilation error in the
>> case where the argument tuple to sig is null_type.
>
> FYI, this is a typical problem. Phoenix-2 has fixed this nagging
> problem.

How?