Hi,
I have a text file say file1 having data like
ABC c:/hm/new1 Dir
DEF d:/ner/d sd
......
So i want to make a table from this text file, is it possible to do it using perl.
Thanks in advance
Sarbjit (1 Reply)
Hi
I need to write a bash script to take the data stored in 3 oracle tables .. and filter them and store the results in a csv file.
It is an Oracle database
Thank you (1 Reply)
i want to run update query for oracle which is in up.sql taking values from a.csv.
I have implemented shell script to do it.
extn="perl"
ls -1 | while read file
do
echo "$file,$extn" > a.csv
done
up.sql contains
update file_list set filename=$1 where extn=$2;
The code to update is... (2 Replies)
Hello,
I need some help to reformat this table-by-row to matrix?
infile:
site1 A:o,p,q,r,s,t
site1 C:y,u
site1 T:v,w
site1 -:x,z
site2 A:p,r,t,v,w,z
site2 C:u,y
site2 G:q,s
site2 -:o,x
site3 A:o,q,s,t,u,z
site3 C:y
site3 T:v,w,x
site3 -:p,routfile:
SITE o p q r s t v u w x y... (7 Replies)
Gents,
Can you please help me to create a pivot table from a csv file. ( I have zip the csv file)
Using the file attached, columns 1,28 and 21 i would like to get something like this output
JD Val 1 2 3 4 5 6 7 8 9 10 11 12 Total... (4 Replies)
Hi all
I need help converting a text file into a html table in bash and I need to email this table. The text file looks like the below. Two columns with multiple rows. Top row being header.
Application Name Application Status
Application 1 Open
Application 2 ... (2 Replies)
I have this code with me but the condition is If any of the mandatory columns are null then entire file will be rejected.
LOAD DATA
infile ' ' #specifies the name of a datafile containing data that you want to load
BADFILE ' ' #specifies the name of... (1 Reply)
Hi to all,
I have a file like that in attach, I need to create a table or csv with only this field:
"Barcode","Device Name", "ACSL".
I tried with grep with -B options but the number of lines are different for any block is different, there is a method with sed or awk to extract it.
Thanks a... (2 Replies)
Discussion started by: alen192
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)