foo!(bar) ==> foo{bar}

[Benji Smith]

Walter Bright wrote:
> The foo.(bar) syntax seems to be sinking. The foo{bar} seems to be the 
> most practical alternative. So, how about putting it in the next D2 
> release on a trial basis, so people can try it out and see how it looks?

Braces for template instantiation seem okay. But would there be any 
change to template declaration syntax?

There's a conceptual symmetry between templates and functions, Both 
having declarations and invocations. Functions use parens for both 
cases, whereas templates use "()" at the declaration site and "!()" at 
the invocation site.

I think the symmetry would be ideal, if bare parens were used in all 
cases. But at least the "!()" syntax was somewhat reminiscent of the 
declaration syntax (and the function invocation syntax).

Using curlies for template instantiation breaks the symmetry pretty 
badly, unless the template declaration syntax also uses curlies.

--benji