The "loop and a half"

[bartc]

On 07/10/2017 17:28, Steve D'Aprano wrote:
> On Sun, 8 Oct 2017 01:15 am, bartc wrote:

>> You do remember this was about using programs /like/ sort as a model for
>> writing true interactive scrolling text apps?
> 
> I don't remember any such thing. I remember you *claiming* that, but if anyone
> actually did make that claim, I haven't seen it.


bart:
 > This doesn't make sense. For interactive use, you wouldn't bother
 > testing for eof, as you'd be testing the eof status of the keyboard.
 >

ChrisA:

 > You mean the way heaps and heaps of Unix programs work, processing
 > until EOF of stdin? Yeah, totally makes no sense, man, no sense at
 > all.

bart:
 > If you're referring to the ability to redirect stdin so that input can
 > come from a file as well as from a live keyboard, then you're doing
 > file handling; it's NOT interactive.

ChrisA:
 > How would you write a sort program? How would you tell it that you're
 > done entering data?