[boost] Re: Workaround for Metrowerks overloading problem?

From: Howard Hinnant (hinnant_at_[hidden])
Date: 2003-09-15 15:17:54

On Sep 15, 2003, at 3:36 PM, Daniel Wallin wrote:

> At 19:37 2003-09-15, Eric Friedman wrote:
>> Howard Hinnant wrote:
>> > Like Daniel, I recommend the enable_if pattern here, but I would do 
>> it
>> > like:
>> >
>> >    struct test_t
>> >    {
>> >        template <typename T>
>> >        test_t(T&, typename enable_if<!is_const<T>::value>::type* = 
>> 0)
>> >        {
>> >        }
>> >
>> >        template <typename T>
>> >        test_t(T&, typename enable_if<is_const<T>::value>::type* = 0)
>> >        {
>> >        }
>> >    }
>>
>> Unfortunately, this prevents construction from temporaries.
>
> FWIW, the workaround I posted doesn't.

<nod> Right.  Your solution is problematic with CodeWarrior Pro 9 / 
Mac.  It compiles, but both the reference and const reference tests 
bind to test_t(const T&).

-Howard