Split range that has no length or slice?

[Alex Parrill via Digitalmars-d-learn]

On Monday, 9 November 2015 at 17:56:14 UTC, Alex Parrill wrote:
> On Monday, 9 November 2015 at 15:23:21 UTC, Spacen Jasset wrote:
>> On Monday, 9 November 2015 at 14:58:19 UTC, Adam D. Ruppe 
>> wrote:
>>> File has a .byLine and .byLineCopy method you could use to 
>>> just get lines from it.
>>
>> Ah yes. but unfortunately I don't want to do that. I want to 
>> pass a range into my print function. i.e. Sometimes it may not 
>> be a File, it might be from a string.
>>
>> Looks like it's not possible without adaptor code. I would 
>> suggest File should have a range function on it to return a 
>> range, for that matter byLine and byChunk probably shouldn't 
>> even be associated with file at all IMHO.
>
> The `.byLine` and `.byLineCopy` functions return ranges. Use 
> those.

Scratch that, just read your post.

Ideally, something like 
`file.byChunk(4096).joiner.splitter('\n')` would work. The issue 
is that the byChunk ranges aren't forward or sliceable ranges 
(which makes sense).

Theoretically, it should be possible to implement `splitter` with 
a plain input range, but it would require that the sub-range that 
`splitter.front` returns be invalidated when calling 
`splitter.popFront`.