skinny delegates

[kinke]

On Friday, 3 August 2018 at 14:46:59 UTC, Jonathan Marler wrote:
> After thinking about it more I suppose it wouldn't be that 
> complicated to implement.  For delegate literals, you already 
> need to gather a list of all the data you need to put on the 
> heap, and if it can all fit inside a pointer, then you can just 
> put it there instead.

Nope, immutability (and no escaping) are additional requirements, 
as each delegate copy has its own context then, as opposed to a 
single shared GC closure.

> In the end, I think that most if not all use cases would be 
> better off using the library solution if they want this 
> optimization.

I disagree.