I was wondering someone might be able to push me in the right direction, I am writing a script to modify fixed-width spool files, As you can see below the original spool file broke a single line into two for printability sake.
I have had been able do the joins using sed, the thing I am... (10 Replies)
Hi,
I have a file a.txt having no delimiter.
I want to exclude the line which contains 435th character as 1 or 2 and redirect the rest of the lines to another file b.
Can you pls suggest how to do this in one liner awk.
Following is just one line of the input file a:-
120110116 ... (10 Replies)
I have file which contains around 5000 lines.
The lines are fixed legth but having no delimiter.Each line line contains nearly 3000 characters.
I want to delete the lines
a> if it starts with 1 and if 576th postion is a digit i,e 0-9
or
b> if it starts with 0 or 9(i,e header and footer)
... (4 Replies)
Hi all,
This is my first and undoubtedly many posts to come. I'm new to using unix and would like a hand with this problem I have. What i'm trying to do is match 2 sets of data from 2 files and put result into file 3. Sounds simply but there is a catch, the match is a "partial field" match, if... (2 Replies)
Hi all
OS - RHEL6.4
I have input file -f1.txt
I need to search line which starts with \Start and read next line till it gets blank line and join them all. I need to trim any trailing spaces for each line.So output.txt should be..
\Start\now\fine stepwatch this space for toolsends... (7 Replies)
Discussion started by: krsnadasa
7 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)