Annotation of functions

[jmh530]

On Tuesday, 20 February 2018 at 12:15:57 UTC, psychoticRabbit 
wrote:
> I've noticed that Go and Rust annotate functions.
>
> func (in go)
> fn (in rust)
>
> I was kind of wondering why they made that choice, given 
> compilers in many languages do not.
>
> Would this be a useful feature in D?
>
> Everything else seems to have an annotation (e.g structs, 
> classes.) So why not functions?
>
> What are people's thoughts about it?
>
> My first thought is to make it an optional annotation, for the 
> benefit of developing source code analysis tools that can 'more 
> easily' find functions in source code (i.e. The D compiler can 
> just strip it off and do nothing with it.).  That way 
> programmers that see no benefit in it, don't have to deal with 
> it.

If you want to annotate your functions (rather than someone 
elses), you could do something like below. Ideally this would 
also include a compile-time check that foo is a function. Maybe 
use Atila's concepts library?

enum Function;

@Function void foo() { }

void main()
{

}