how to do iota(0,256) with ubytes ? (cf need for iotaInclusive)

[Per Nordlöw via Digitalmars-d]

On Friday, 9 October 2015 at 07:20:43 UTC, John Colvin wrote:
> For anyone googling for a solution to this, here's a workaround:
>
> auto b = iota(0, 256).map!"cast(ubyte)a";

Without string lambdas:

     auto b = iota(0, 256).map!(a => cast(ubyte)a);

I would suggest to turn this pattern into a new algorithm 
typically called

     iotaOf(T, B, E)(B begin, E end);

called as

     iotaOf!ubyte(0,256)

and use `std.conv.to` instead.