Why do some attributes start with '@' while others done't?

[Mike Parker via Digitalmars-d]

On Monday, 25 January 2016 at 18:34:24 UTC, burjui wrote:
> On Friday, 22 January 2016 at 18:28:31 UTC, Wyatt wrote:
>> If you need an IDE to work comfortably in a language, 
>> something has clearly gone wrong.
>
> Oh come on, not that "Vim/Emacs vs IDEs" crap again.

Not what he was saying at all. He was making the point that 
languages which can't be comfortably used without an IDE must 
have something wrong in their design. He was making no judgements 
about IDEs vs. text editors.