I have a large file with fields delimited by '|', and I want to run some analysis on it. What I want to do is count how many times each field is populated, or list the frequency of population for each field.
I am in a Sun OS environment.
Thanks,
- CB (3 Replies)
I need to write a shell script "cmn" that, given an integer k, print the k most common words in descending order of frequency.
Example Usage:
user@ubuntu:/$ cmn 4 < example.txt :b: (3 Replies)
Hi all,
I am trying to analyze my data, and I will need your experience.
I have some files with the below format:
res1 = TYR res2 = ASN
res1 = ASP res2 = SER
res1 = TYR res2 = ASN
res1 = THR res2 = LYS
res1 = THR res2 = TYR
etc (many lines)
I am... (3 Replies)
Hi, I have tab-deliminated data similar to the following:
dot is-big 2
dot is-round 3
dot is-gray 4
cat is-big 3
hot in-summer 5
I want to count the frequency of each individual "unique" value in the 1st column. Thus, the desired output would be as follows:
dot 3
cat 1
hot 1
is... (5 Replies)
Gents,
Can you please help me to solve this case
In my input file I have a values in column 49 which always need to be one, but sometimes the system create a value 2, in this case I need to go to search in the original file and replace the values in the row where the value 2 is and in the... (6 Replies)
Dear all,
I have an AWK script which provides frequency of words. However I am interested in getting the frequency of chunked data. This means that I have already produced valid chunks of running text, with each chunk on a line. What I need is a script to count the frequencies of each string. A... (4 Replies)
Gents,
Please can you help with this.
I have a big file (file2) which contends many records increment every 25 rows ( column 1 ).
Then I have other file as reference (file1).. column 1 to 11.
I want to compare that all values in file2 (column 2 to 12.) match with values in... (2 Replies)
Gents,
If there the possibility can to extract data using a reference from other file.
input.txt ( big file which contends all data
output.txt ( data extracted )
selection.txt ( information to extract the data
Example
In file input.txt there is big data each record have 56 lines like... (3 Replies)
Discussion started by: jiam912
3 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)