What are AST Macros?

[Nick Sabalausky]

"Steven Schveighoffer" <schveiguy at yahoo.com> wrote in message 
news:op.vfsn2hvweav7ka at localhost.localdomain...
>
> Just for fun, how would you define a serious language?
>
> 1. Major major websites use it (facebook is one example, there are many 
> more).
> 2. There are lots of books about it.
> 3. people make serious money doing it, not just play money.
> 4. major IDEs support it (I use netbeans, and probably would be lost 
> without it).
> 5. The documentation is complete and well written.
> 6. It supports interfaces to many major technologies (many databases, 
> apache, pdf, etc.)
>

For me, there'd be two criteria (in no order):

1. Useful
2. Doesn't suck

:)