Proposal : mnemonic for start index for slices

[Temtaime via Digitalmars-d]

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 ?