Re: Reading LAST line from text file without iterating through the file?

From:
=?ISO-8859-1?Q?Arne_Vajh=F8j?= <arne@vajhoej.dk>
Newsgroups:
comp.lang.java.programmer
Date:
Fri, 25 Feb 2011 18:08:11 -0500
Message-ID:
<4d683658$0$23757$14726298@news.sunsite.dk>
On 25-02-2011 17:46, Tom Anderson wrote:

On Fri, 25 Feb 2011, Arne Vajh?j wrote:

On 25-02-2011 05:03, Tom Anderson wrote:

On Thu, 24 Feb 2011, Arne Vajh?j wrote:

On 24-02-2011 15:49, Tom Anderson wrote:

On Fri, 25 Feb 2011, Peter Duniho wrote:

On 2/24/11 10:42 PM, Lars Enderin wrote:

2011-02-24 15:26, Peter Duniho skrev:

On 2/24/11 10:14 PM, Lars Enderin wrote:

ASCII character values are limited to the 0-127 range. That's an
outdated "standard".


Used by "obsolete systems". A key point in my amusement. :)


I thought so, but Ken seemed to need an explanation.


Yes, and it was a good explanation. Unfortunately, I don't think he
understood the explanation, nor do I think he will understand further
clarification. I think it more likely that the harder anyone tries to
explain to him these points, the more dug in his heels will be.

To do otherwise would necessarily require an admission that
there's no
single "text file" format, and that even if there were, ASCII or any
of the single-byte derivatives thereof ain't it. I don't see any way
such an admission would ever be produced.


There is a single text file format: lines of characters in some
encoding, terminated by an end-of-line sequence which is
distinguishable
from any other characters.

It's merely the case that some current mainframes, and some obscure or
historical systems, do not store text in text files!


No.


Yes.

There are also count prefix (and sometimes suffix) formats.


Which, although they may be used to store text, are not text files.


Of course they are text files.

If I edit Foobar.java in a text editor and write a Java program and
saves it, then why should it be less of a text file, because the
record format used on that system is not delimited?


If i edit Foobar.java in Google Docs and write a Java program and save
it, then why should it be less of a text file, because it's stored in
some mysterious cloud database?

Or how about:

$ dbm Foobar.java init
$ dbm Foobar.java set 1 "public class Foobar"
$ dbm Foobar.java set 2 "{"
$ dbm Foobar.java set 3 "}"

?

That a file has text somewhere in it does not make it a text file.


Well - the fact that:
- the Java compiler reads Java source in that format
- the C compiler reads C source in that format
- Java BufferedReader/FileReader readLine can read the files
- C fopen with t and fgets can read the files

seems to distinguish it a lot from what you mention.

Arne

can read it would be a significant

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