On 07/10/2017 14:19, Steve D'Aprano wrote:
On Sat, 7 Oct 2017 11:06 pm, bartc wrote:
So I have to copy 33,000 lines from a document,
Don't be daft. Nobody says that stdin is a sufficient interface for a
heavy-weight task like that. With 33000 lines of text, I absolutely would
save them to a permanent file on disk, because I wouldn't want to risk having
the application crash or the power go off just as I've typed line 32999 and
lose the lot.
You're missing something I think. The 33K lines already exist elsewhere,
and have been copied to the clipboard. So you won't lose anything if the
power goes off, assuming the original are secure.
For 33000 lines, having one extra temporary file floating around is a cost
worth paying. For 33 lines, it is not.
I was demonstrating the crudeness of copying and pasting to a console
window rather than between proper applications. That was easier to show
with a larger example which highlighted some of the practical aspects.
You want a one-size fits all solution. Are you capable of understanding that
different tasks and different scenarios are often best solved using different
techniques?
[...]
Put that way, it doesn't sound very sophisticated does it?
Nobody said it was sophisticated. That's the whole point: having sort read
from stdin as you type into the terminal is the LEAST sophisticated,
simplest, most bare-bones, basic technique that works.
You do remember this was about using programs /like/ sort as a model for
writing true interactive scrolling text apps?
I said it was a poor model because sort is normally used with files and
pipes. You're trying to keep it as a viable model because, sometimes,
sort can also be used with pasted text which sort reads as as though it
had been typed in real time (not from a pipe or file anyway).
OK, I'm not suggesting doing away with that.
But it is still a bad model of text application to use elsewhere, even
if extra prompts were added. For one thing, it only reads one block of
data, then it stops. A more typical text application will be doing
different things requiring different entry modes.
--
bartc
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bartc
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