Hi All,
I have a file like below, how can i insert one line after line 1 without using a temporary file in perl?
line 1
line 2
line 3
expected result
line 1
new line <---insert here
line 2
line 3 (2 Replies)
my $branch_email_e = $FORM{r_Branch};
my $hostbranch_email_e = $FORM{r_Host_Branch};
my $branch_email_f = $FORM{r_Direction_generale};
my $hostbranch_email_f = $FORM{r_Direction_generale_daccueil};
my $branch_realname_e = '';
my $branch_realname_f = '';
... (4 Replies)
Dear Members,
I have a table in Oracle DB and one of its column name is INFO which has data in text format which we need to fetch in a script and create an xml file of a new table from the input.
The contents of a single cell of INFO column is like:
Area:app - aam
Clean Up Criteria:... (0 Replies)
Greetings,
I'm doing a process whereby I need to search for all filenames containing a given bit of text and grab the newest file from what may be 20 results. In a script I'm writing,
i've got a monster line to do the sort as follows:
find /opt/work/reports/input -name "*$searchtarget*" |... (4 Replies)
I have a script that runs once per month. It performs a certain task ONLY if the month is January, April, July, or October.
MONTH=`date +%m`
if || || || ; then
do something
else
do a different thing
fi
Is there a neater way of doing it than my four separate "or" comparisons? That... (2 Replies)
hi all i want a script to FTP a file and should generate a quality checksum file
means when I FTP a file from one server to another server it should generate a QC file which should contain timestamp,no.of records in that file
Thanks in advance
saikumar (3 Replies)
$ cat data
Do NOT print me
START_MARKER
Print Me
END_MARKER
Do NOT print me
$ cat awk.sh
start=START_MARKER
end=END_MARKER
echo; echo Is this ugly syntax the only way?
awk '/'"$start"'/,/'"$end"'/ { print }' data
echo; echo Is there some modification of this that would work?
awk... (2 Replies)
Hello,
I have some tab delimited text data,
index name chg_p chg_m
1 name,1 1 0
2 name,2 1 1
3 name,3 1 0
4 name,4 1 0
5 name,5 1 1
I need to duplicate the "index" column, call it "id" and insert it after the... (8 Replies)
Hi Folks,
I have just spent a couple of days resolving some problems at the remote DR data centre, sorting out the problems caused by the over zealous use of a Vacuum cleaner of all things.
We have a backup server a SUN V480R with a Storedge 3510 and expansion attached which suffered a... (6 Replies)
Discussion started by: gull04
6 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)