I think it mimics (or is?) the system's errno. See:
http://linux.die.net/man/3/errno
> Its value is significant only when the return value of the call indicated
an error (i.e., -1 from most system calls; -1 or NULL from most library
functions); a function that succeeds is allowed to change errno.
On 11/04/2011 07:48 PM, Ken Peng wrote:
perl -le 'open HD,"/etc/passwd" or die $!; ; print $!'
Here's your one-liner as a script with some "printf" instrumentation:
$ nl HD.pl
1 #!/usr/bin/perl
2 use strict;
3 use warnings;
4 open HD,"/etc/passwd" or die $!;
5 pri
δΊ 2011-11-5 11:16, Anneli Cuss ει:
$! is not guaranteed to be cleared if there was no error. This means you
probably don't have a "Bad file descriptor" error, it's just the last value
of $! (or 'errno').
That's confused.
Since there is not such an error, I was thinking $! or $@ shouldn't
inclu
$! is not guaranteed to be cleared if there was no error. This means you
probably don't have a "Bad file descriptor" error, it's just the last value
of $! (or 'errno'). See perlvar:
http://perldoc.perl.org/perlvar.html#Variables-related-to-filehandles
For example, let's try $! when I haven't run a
Hi,
$ perl -le 'open HD,"/etc/passwd" or die $!; ; print $!'
Bad file descriptor
what does this error mean? why it happens?
Thanks.
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Sorry for the duplicate Jim. I meant to reply all on the original.
On Fri, Nov 4, 2011 at 3:33 PM, Chris Stinemetz wrote:
>
>
>
>> I don't think I could improve on the extended regex with comments posted
>> by
>> Shawn H. Corey. His regex is the same as mine, with the addition of a
>> couple
>> o
On 11/4/11 Fri Nov 4, 2011 12:56 PM, "Chris Stinemetz"
scribbled:
>>
>>
>>
>> Try this:
>>
>> "Cell 999 CDM 1, 2, CBR 1, 15MHz, HEH" =~ /Cell\s*(\d+)\s*(.*),\s*HEH/;
>> print "<$1> <$2>\n";
>>
>>
>
>
> Thank you Jim. This did the trick! Do you mind explaining how you did this?
> I'm try
On 11/04/2011 03:56 PM, Chris Stinemetz wrote:
Try this:
"Cell 999 CDM 1, 2, CBR 1, 15MHz, HEH" =~ /Cell\s*(\d+)\s*(.*),\s*HEH/;
print "<$1> <$2>\n";
Thank you Jim. This did the trick! Do you mind explaining how you did this?
I'm trying to make sense of it with my perl regex cheat sheet
On Fri, Nov 04, 2011 at 02:56:35PM -0500, Chris Stinemetz wrote:
> Thank you Jim. This did the trick! Do you mind explaining how you did this?
> I'm trying to make sense of it with my perl regex cheat sheet I found
> online.
Execute the following commands to read the docs:
perldoc perlre
perldoc
>
>
>
> Try this:
>
> "Cell 999 CDM 1, 2, CBR 1, 15MHz, HEH" =~ /Cell\s*(\d+)\s*(.*),\s*HEH/;
> print "<$1> <$2>\n";
>
>
Thank you Jim. This did the trick! Do you mind explaining how you did this?
I'm trying to make sense of it with my perl regex cheat sheet I found
online.
http://www.erudil.com
On 11-11-04 01:42 PM, Chris Stinemetz wrote:
I am trying to match a line that has HEH in it.
I would also like to store the number follow CELL in memory variable $1
and store everything following the number and upto excluding ", HEH" in
memory variable $2
so this line:
Cell 999 CDM 1, 2, CBR 1
This should do it -
m/Cell (\d+)(.*), HEH/
On Fri, Nov 4, 2011 at 1:42 PM, Chris Stinemetz wrote:
> I am trying to match a line that has HEH in it.
>
> I would also like to store the number follow CELL in memory variable $1
> and store everything following the number and upto excluding ", HEH"
On 11/4/11 Fri Nov 4, 2011 10:42 AM, "Chris Stinemetz"
scribbled:
> I am trying to match a line that has HEH in it.
>
> I would also like to store the number follow CELL in memory variable $1
> and store everything following the number and upto excluding ", HEH" in
> memory variable $2
>
> so
I am trying to match a line that has HEH in it.
I would also like to store the number follow CELL in memory variable $1
and store everything following the number and upto excluding ", HEH" in
memory variable $2
so this line:
Cell 999 CDM 1, 2, CBR 1, 15MHz, HEH
will equal:
$1 = 999
$2 = CDM 1,
Hi "a b",
On Fri, 4 Nov 2011 15:18:00 +0530
a b wrote:
> apologize!!
>
> Can you help me to understand how async I/O can help me
>
What's wrong with the resources in the URL I pointed you to? There's also
http://en.wikipedia.org/wiki/Asynchronous_I/O which may be of interest. "The
Gods help
apologize!!
Can you help me to understand how async I/O can help me
Regards
a b
On Thu, Nov 3, 2011 at 9:06 PM, Shlomi Fish wrote:
> Hello a b,
>
> please reply to the list as I specifically request in my signature.
> (Wretched
> gmail.com.) I'm CCing the list.
>
> On Thu, 3 Nov 2011 16:15:11
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