Re: [Vala] C# conditional attributes in vala?

[Abderrahim Kitouni <a kitouni gmail com>]

Hi,
                   في ث، 03-08-2010 عند 16:08 -0700 ، كتب Nigel Griffin:
> Hi,
>
> I have certain methods that I'd only like to be linked-in under certain circumstance (for performance 
> reasons).  A real world example might be a need to log messages only from debug builds.
>
> In C or C++, I could achieve this with a macro that would evaluate to a blank line when the appropriate 
> flag is not set.
>
> In C#, I could use conditional attributes to achieve the same result.
>
> It's my understanding that there are no plans to ever add C style macros to Vala.  I was wondering if there 
> were any plans to support C# conditional attributes in vala.  And if not, is there a way for me to advocate 
> for the inclusion of Conditional Attributes into Vala?
>
> In the mean time, it seems my only option is the rather inelegant solution of peppering my code with 
> #if-#endif blocks.  If there is a vala solution, I am open to suggestions.
I think you would use the #if inside your "conditionally built"
function. This is used even in C when the macro for the same thing would
be non-trivial.

void cond_built(...) {
#if DEBUG
...
#endif
}

and you could even declare it inline so it's more like a macro.

HTH,
Abderrahim