Hi,
I am trying to read 2 files and writing to the 3rd file if I find the same elements in 2 files. my first file is
1 0 kb12124819 766409 1.586e-01
1 0 kb17160939 773886 8.674e-01
1 0 kb4475691 836671 8.142e-01
1 0 ... (2 Replies)
Hi all,
I'm figuring on how to grep only specific data I want below:
Bin Total %
----- ------- -----
1 15 42.9
Bin Total %
----- ------- -----
2 15 ... (3 Replies)
I have several files with say something like
cat
sparrow
I can grep for "cat" and "sparrow" and usually the output is one below the other
cat
sparrow
How can I view these as columns say
Pets Birds
cat sparrow
Would be great if this can be on command line using awk or... (1 Reply)
I am trying to make a script that would take the highest value of each columns for example
cat file
0 0 0 0
0 8 9 1
3 8 3 9
7 7 7 7
the results would be
7 8 9 9
I found this code, and it takes the highest value with a... (2 Replies)
Hey,
Need some help for command to print only lines with two columns in a file
abc 111
cde 222
fgh
ijk 2
klm 12 23
nop
want the ouput to be
abc 111
cde 222
ijk 2
Thanks a lot in advance!!! (3 Replies)
Hi dear users,
I need to compare numeric columns in two files. These files have the following structure.
K.txt (4 columns)
A001 chr21 9805831 9846011
A002 chr21 9806202 9846263
A003 chr21 9887188 9988593
A003 chr21 9887188 ... (2 Replies)
HI all,
I have data in a file that looks like this:
1 HOW _ NNP NNP _ 3 nn _ _
2 DRUGS _ NNP NNP _ 3 nn _ _
3 ACT _ NNP NNP _ 0 null _ _
4 : _ ... (3 Replies)
I have several of the same file names(facts) in different directories that are "|" pipe delimited and are like such:
xxx.xxx.xxx.xx1|blah|a|host|FQDN|domain||extra stuff blah1 blah2 host
xxx.xxx.xxx.xx2|blah|a|host|FQDN|domain||extra stuff blah1 blah2 host... (2 Replies)
Discussion started by: metallica1973
2 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)