Hi all,
in my csv file it'll look like this, and of course it may have more columns
US to UK;abc-hq-jcl;multimedia
UK to CN;def-ny-jkl;standard
DE to DM;abc-ab-klm;critical
FD to YM;la-yr-tym;standard
HY to MC;la-yr-ytm;multimedia
GT to KJ;def-ny-jrt;critical
I would like to group... (4 Replies)
Hi Experts,
The question may look very silly by seeing the title, but please have a look at it clearly.
I have a text file where the first 5 columns in each row were supposed to be attributes of a sample(like sample name, number, status etc) and the next 25 columns are parameters on which... (3 Replies)
Looks at the most efficient way to add up the column of data based off of the rows.
Random data
Name-Number-ID
Sarah-2.0-15
Bob-6.3-15
Sally-1.0-10
James-1.0-10
Scotty-10.7-15
So I would select all those who have ID = 15 and then add up total number
read - p "Enter ID number" Num
... (3 Replies)
Hello,
I have a huge file with many columns . I want to use the names of the columns to print columns to another file.
for example
file.txt
COLA COLB COLC COLD
1 2 3 5
3 5 6 9
If I give name for multiple columns to the code:... (5 Replies)
Dear All,
I have a data file input.csv like below. (Only five column shown here for example.)
Data1,StepNo,Data2,Data3,Data4
2,1,3,4,5
3,1,5,6,7
3,2,4,5,6
5,3,5,5,6
From this I want the below output
Data1,StepNo,Data2,Data3,Data4
2,1,3,4,5
3,1,5,6,7
where the second column... (4 Replies)
HI,
My Input file data is
dn:adcfgeneral
id:13343
Name:xxxxxx
Password:iutyerwuitywue wpuwt
tuiytruityrutyrwtyrwp
dn:cdferwjyyyy
id:3875
Name:yyyy
Password :hgfdsjkfhdsfkdlshf
dshfkldshfdklsfh
interset:uiuiufj
My output should be
... (6 Replies)
Hello
I want to collapse a file with multiple rows into consolidated lines of entries based on selected columns as the 'key'.
Example:
1 2 3 Abc def ghi
1 2 3 jkl mno p qrts
6 9 0 mno def Abc
7 8 4 Abc mno mno abc
7 8 9 mno mno abc
7 8 9 mno j k
So if columns 1, 2 and 3 are... (6 Replies)
I have to ascend the number of two selected columns by horizontal manner.
For example, I have a data like this in csv file (tab delimited format)
08 1 19185 18010
16 4 7960 9339
01 6 516769 517428
09 9 51384 49270
I need to ascend the two columns numbers (horizontal manner) like as... (5 Replies)
Discussion started by: dineshkumarsrk
5 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)