Hey,
I've got a RH9 box running telnet-server 0.17-25. Now i don't know what the problem is and i've been reading all night trying to find somthing like it. I am able to open a telnet session on the box using localhost and 10.10.10.6(machines address) but if i try to do it from another... (7 Replies)
I'm trying to help convert my boss over to Linux. He has an HP/Compaq PC on which he installed Fedora Core 4 on. It's got a Linksys wireless card in it and we're using the NDIS wrapper to load the Windows driver for the chipset on that card. 'iwconfig' sees the card. We can configure the card. ... (1 Reply)
we migrated from a system with HPUX B.11.0 to HPUX 11.23 i64
the new server is the same IP as the old server. the old server is renumbered to something else to avoid conflict.
on the old system, we had a user named "ftp" . There is one person who daily will ftp files to the host using this... (15 Replies)
i want to print ODD lines like first ,third then fifth and so on
234,567,ABC,KJL
234,565,ABD,KJL
234,568,ABE,KJL
234,560,ABF,KJL
234,563,ABG,KJL
234,562,ABH,KJL
O/P will be like
234,567,ABC,KJL ----->first liine
234,568,ABE,KJL ----->third line
234,563,ABG,KJL ----->fifth line... (6 Replies)
Hello All,
i am a newbie and need some help when reading a csv file in a bourne shell script. I want to read 10 lines, then wait for a minute and then do a reading of another 10 lines and so on in the same way. I want to do this till the end of file.
Any inputs are appreciated
... (3 Replies)
Hi friends,
I am looking for sed command/script that would search for a given fixed pattern on odd lines and then if it matches, prints the matching pattern and the next line. For example, in the example below, i am looking for pattern 0 and 1011 on odd lines.
########## start of example file... (10 Replies)
Hello people,
I am trying with sed to insert some text at the beginning of each odd line of a file but no luck. Can you please help. Awk is also suitable but I am not very familiar with it.
Thank you in advance for any help. (7 Replies)
Hello,
I'm here again asking for your precious help.
I'm writing some code to convert csv files to html.
I want to highlight header and also I want to have rows with alternate colors.
So far this is my work###Let's format first line only with some color
cat $fileIN".tmp1" | sed '1... (7 Replies)
In the below directory I am trying to delete all lines with a .bam extention that have the pattern IonCode_ followed by an even number. I am also trying to delete all lines with a .fastq extention that have the pattern IonCode_ followed by an odd number. I was going to use find but can see all... (6 Replies)
Discussion started by: cmccabe
6 Replies
LEARN ABOUT DEBIAN
devel::refcount
Devel::Refcount(3pm) User Contributed Perl Documentation Devel::Refcount(3pm)NAME
"Devel::Refcount" - obtain the REFCNT value of a referent
SYNOPSIS
use Devel::Refcount qw( refcount );
my $anon = [];
print "Anon ARRAY $anon has " . refcount($anon) . " reference
";
my $otherref = $anon;
print "Anon ARRAY $anon now has " . refcount($anon) . " references
";
DESCRIPTION
This module provides a single function which obtains the reference count of the object being pointed to by the passed reference value.
FUNCTIONS
$count = refcount($ref)
Returns the reference count of the object being pointed to by $ref.
COMPARISON WITH SvREFCNT
This function differs from "Devel::Peek::SvREFCNT" in that SvREFCNT() gives the reference count of the SV object itself that it is passed,
whereas refcount() gives the count of the object being pointed to. This allows it to give the count of any referent (i.e. ARRAY, HASH,
CODE, GLOB and Regexp types) as well.
Consider the following example program:
use Devel::Peek qw( SvREFCNT );
use Devel::Refcount qw( refcount );
sub printcount
{
my $name = shift;
printf "%30s has SvREFCNT=%d, refcount=%d
",
$name, SvREFCNT($_[0]), refcount($_[0]);
}
my $var = [];
printcount 'Initially, $var', $var;
my $othervar = $var;
printcount 'Before CODE ref, $var', $var;
printcount '$othervar', $othervar;
my $code = sub { undef $var };
printcount 'After CODE ref, $var', $var;
printcount '$othervar', $othervar;
This produces the output
Initially, $var has SvREFCNT=1, refcount=1
Before CODE ref, $var has SvREFCNT=1, refcount=2
$othervar has SvREFCNT=1, refcount=2
After CODE ref, $var has SvREFCNT=2, refcount=2
$othervar has SvREFCNT=1, refcount=2
Here, we see that SvREFCNT() counts the number of references to the SV object passed in as the scalar value - the $var or $othervar
respectively, whereas refcount() counts the number of reference values that point to the referent object - the anonymous ARRAY in this
case.
Before the CODE reference is constructed, both $var and $othervar have SvREFCNT() of 1, as they exist only in the current lexical pad. The
anonymous ARRAY has a refcount() of 2, because both $var and $othervar store a reference to it.
After the CODE reference is constructed, the $var variable now has an SvREFCNT() of 2, because it also appears in the lexical pad for the
new anonymous CODE block.
PURE-PERL FALLBACK
An XS implementation of this function is provided, and is used by default. If the XS library cannot be loaded, a fallback implementation in
pure perl using the "B" module is used instead. This will behave identically, but is much slower.
Rate pp xs
pp 225985/s -- -66%
xs 669570/s 196% --
SEE ALSO
o Test::Refcount - assert reference counts on objects
AUTHOR
Paul Evans <leonerd@leonerd.org.uk>
perl v5.14.2 2011-11-15 Devel::Refcount(3pm)