protocol for using InputRanges

[Andrei Alexandrescu]

On 3/27/14, 1:58 PM, Walter Bright wrote:
> On 3/27/2014 12:50 PM, Andrei Alexandrescu wrote:
>> Yah, agreed. -- Andrei
>
> Completely unworkable. To determine if a range is empty or not, it may
> have to actually read from its input. TTYs are an example. Although
> empty may then cache the result, and not read the second time it is
> called, an observer of TTY could see that an item was read from the TTY.

That's a good point too.

Andrei