Proposal : mnemonic for start index for slices

[John Colvin via Digitalmars-d]

On Saturday, 8 August 2015 at 13:08:08 UTC, Temtaime wrote:
> Hi !
> I want to add some sugar to D : sometimes it's necessary to use 
> complex start index.
>
> For example:
> auto sub = arr[idx + 123 * 10..idx + 123 * 10 + 1];
>
> Proposal is to add a mnemonic for start index, for instance :
>
> auto sub = arr[idx + 123 * 10..# + 1]; // # == start index
>
> # is for example. Maybe it can be @ or some other symbol.
>
> Any ideas ? Should i try to create a DIP ?

That would be neat, but the thing is you can already do this:

auto sub = arr[idx + 123 * 10 .. $][0 .. 1];

The only argument that might hold weight is that calculating 
opDollar and doing two index/slice operations might be relatively 
expensive for some user-defined type.