feature request: __ARGS__ for logging (cf __FILE__, __LINE__, __FUNC___)
doob at me.com
Fri Feb 1 07:25:20 PST 2013
On 2013-02-01 15:35, bearophile wrote:
> Maybe it's the first serious proposal for D macros I see :-)
> Is it possible to re-use the <[ ]> syntax (and $...) for other purposes?
That syntax is just an abstract syntax, it does not need to look like
that. I'm thinking we could do something similar to Scala's reify macro.
I call this the "ast" macro. Look at the header "The AST Macro".
But to answer your question, no. It didn't cross my mind.
> Have you seen the macros of Scala language? http://scalamacros.org/
Yes, this proposal is basically the same as macros in Scala, just
adapted the syntax for D.
> Regarding the attribute macros, my main use case for them is to extend
> the D type system in some ways. How well is such usage supported?
It might be possible, depending on what you want/need. I'm thinking you
can do something like this:
@foo int a;
Which is replaced with:
It's a different type so depending on how you look at it you could say
it affected the type system.
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