Oleg Kobchenko wrote:
We need a general purpose read line functionality.
It is common in C runtime and in other languages.
Although, it is possible to do in J, but it's better not
to do the low-level stuff every time.
I suggest that we add two new definitions to the files script. One is
I have tryed it on a 1.2GB file. Since my laptop has only 1GB RAM I have
killed the process when it consumed 500MB (and rising).
Yoel
On 5/15/06, Henry Rich [EMAIL PROTECTED] wrote:
Try
x ([: I. E.) y
--
For information
Chris Burke wrote:
if. len #dat do.
if. p s do.
dat=. dat, LF
else.
'file not in LF-delimited lines' 13!:8[3
Note that this assumes that the last line of the file is
terminated by a line feed. Otherwise, there can be a
spurious error if the file is slightly larger
At 09:38 -0400 2006/05/16, Miller, Raul D wrote:
Chris Burke wrote:
if. len #dat do.
if. p s do.
dat=. dat, LF
else.
'file not in LF-delimited lines' 13!:8[3
Note that this assumes that the last line of the file is
terminated by a line feed. Otherwise, there can
It is all relative.
The LF can be seen (as you do) as end of line or as new line.
In the first case, all lines should end with end of line.
In the second, LF cuts one line from another.
When editing a text file, and requesting to place the cursor at end of
file, with no LF at the end the
Certainly, in my experience, LF, CR, or CRLF are considered
as EOL (in ..IX, MAC, PC OSs). Going way back, these things
came from input devices such as the IBM 1050 which was an
early typewriter terminal. It had the charming attribute
that the return key did just that (returned the carriage
as on
These are interesting stories about line terminators.
I agree on providing all the data.
But I think absence of final terminator is more
a stylistic issue (or a matter of choice) than a defect.
Hence, it more like truthful conveying than alerting
cleanliness.
Here's on cygwin:
[EMAIL PROTECTED]
OK, MS (not bashing women :) Excel - the problem is,
one often doesn't have the choice not to use it in
the sense that people send files exported from Excel...
A case where you can choose not to use it includes things
like trying to use Excel to open a text file that starts
with the ascii
Our company is entirely using OpenOffice. It is a mature product to
replace MS Office.
Joey K Tuttle wrote:
OK, MS (not bashing women :) Excel - the problem is,
one often doesn't have the choice not to use it in
the sense that people send files exported from Excel...
...
At 15:29 -0400 2006/05/16, Miller, Raul D wrote:
Joey K Tuttle wrote:
OK, MS (not bashing women :) Excel - the problem is,
one often doesn't have the choice not to use it in
the sense that people send files exported from Excel...
And sometimes those files are broken or virus infected,
Miller, Raul D wrote:
Chris Burke wrote:
if. len #dat do.
if. p s do.
dat=. dat, LF
else.
'file not in LF-delimited lines' 13!:8[3
Note that this assumes that the last line of the file is
terminated by a line feed. Otherwise, there can be a
spurious error if the
Oleg Kobchenko wrote:
It's a great idea to include line reading
into a standard library. Here is a few comments.
There are two differences from the original
readlines:
- overlapped reading (not once and only once)
(with asserting presence of LF in current block)
- automatic removal
Chris Burke wrote:
I am in two minds on the buffer. It does impact performance, though not
by much. But it means that after the block of 1e6 bytes is read in, it
is immediately copied because it is appended to the tail of the previous
block. So the question is whether this performance hit is
I am not sure about overlapped either. Raul's idea about
special-casing sounds good. And the discussion on
spread of copy. In my test, the impact was 5-7%
or so -- a good price for streaming.
I think the bottle neck is in looping in u;.2
and the line proc itself.
I ran the UNIX wc, and it
At 20:54 -0700 2006/05/16, Oleg Kobchenko wrote:
http://support.microsoft.com/kb/215591/
ID,NAME
666,MS
Don' B H8N
Yes - I knew the workaround and even puzzled out that
the origination of the bug is that SYLK files begin with
ID;. You would think that some bright programmer could
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