[Haskell-cafe] RFC: "Native -XCPP" Proposal

[amindfv at gmail.com]

My 2¢ would be that being backwards-compatible is more important than TH integration (if that's even possible). Even if we do the rust/c# way, I think we should use existing syntax. Cpp should really feel like a necessary evil, not like a central part of the language. Inelegance is a virtue.

Tom


El May 6, 2015, a las 16:27, David Kraeutmann <kane at kane.cx> escribió:

> I like this idea. If we need macro expansion, we can do that (and should
> be doing it) more formally and safer using TH.
> Ideally conditional compilation should be also done using TH, but it
> might be overkill for some use cases.
> 
> On 5/6/2015 10:18 PM, Johannes Waldmann wrote:
>> There is maybe another option: do what csharp does.
>> 
>> Define a reduced "preprocessor" (for conditional compilation,
>> but without macro expansion) as part of the language.
>> (cf. https://msdn.microsoft.com/en-us/library/ed8yd1ha.aspx )
>> 
>> They must have have had good reasons for doing it this way.
>> 
>> - J.W.
>> 
>> PS: I was trying to add a proper reference (to the language spec)
>> but this seems hard. It is Section 9.5 of ECMA-334.
>> For viewing the newer specs, it seems you need to have MS-Word or
>> VS installed. See also http://stackoverflow.com/questions/13467103/
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