Subject: Re: [boost] Scoped Enum Emulation
From: Vicente J. Botet Escriba (vicente.botet_at_[hidden])
Date: 2012-01-25 16:27:13
Le 25/01/12 02:40, Joshua Boyce a écrit :
> On Wed, Jan 25, 2012 at 9:17 AM, Vicente J. Botet Escriba<
> vicente.botet_at_[hidden]> wrote:
>>
>> While this is not yet a complete emulation of scoped enums, it has the
>> advantage of that there is no need to use a macro to name the strong type.
>>
>> I don't know if it will be confusing to put provide both approaches in a
>> single mini library.
>>
>> Best,
>> Vicente
>>
>>
> Out of curiosity, what are the cons of this implementation compared to the
> existing one? (The pros seem fairly obvious, but I think I'm missing the
> downside...)
>
Respect to the Beman approach, the major downside I can see is that a
strong enum is not always and enumeration, so cannot be used in a
portable way where an enum is expected (e.g. switch, ...).
Something else is needed to be able to write portable code.
In addition, not all c++ compilers provide explicit conversion, so
either we need to use a explicit function to convert to the underlying
type or let the underlying type conversion operator implicit.
Best,
Vicente