A lazy-chain for std.range?

[Mint via Digitalmars-d]

On Saturday, 27 February 2016 at 04:37:26 UTC, Jakob Ovrum wrote:
> With std.typecons.Option[1] it becomes:
>
>     return elements
>         .map!(…)
>         .filter!(…)
>         .frontOption
>         .getOrElse(fallback);
>
> `fallback` is a lazy argument.
>
> [1] https://github.com/D-Programming-Language/phobos/pull/3915

Cool. I'll have to look this over. Mostly because having a 
function that takes a lazy range is also important for some of 
the stuff I'm doing.

My only concern is how fragmented the std lib is becoming. Range 
related functions in std.algo, std.array, std.range, and now 
std.typecons (which std.variant is separate from, for whatever 
reason). Regardless, that's a different discussion in and of 
itself.