Hello,
I have a file temp.txt:
-------------------------
HELLO WORLD
This is a temp file.
TENCHARSHEre
no beginning UPPERCHARS
HI There
-------------------------
What is a sed egrep command that will target lines that begin with 3-10 uppercase chars, and output the first 2 chars?... (5 Replies)
Hi,
We are receiving an XML file in Unix which has some special characters between tags like '^' etc
<Tag> 1e^O7f%<2304e.$d8f57e8^Bf-&e.^Zh7/327e^O7 </Tag>
We need to remove all special characters like ^ ones and also any '&' or '<' or '>' being sent within the start and close tags i.e.... (6 Replies)
Hi,
I wish to grep for the first instance of <listen-address> value between the first <server></server> tag in an xml file.
Sample xml:
.........
<timeout-seconds>1500</timeout-seconds>
</jta>
<server>
<name>Adminserver_DEV</name>
... (9 Replies)
i need to extract the string between two tags,
input file is
<PersonInfoShipTo AddressID="446311709" AddressLine1="" AddressLine2="" AddressLine3="" AddressLine4="" AddressLine5="" AddressLine6="" AlternateEmailID="" Beeper="" City="" Company="" Country="" DayFaxNo="" DayPhone="" Department=""... (5 Replies)
Hello everybody,
I have a double mission with some XML files, which is pretty challenging for my actual beginner UNIX knowledge. I need to extract some strings from multiple XML files and create a new XML file with the searched strings..
The original XML files contain the source code for... (12 Replies)
Hi All,
We need to split a large xml into multiple valid xml with same header(2lines) and footer(last line) for N number of letterId.
In the example below we have first 2 lines as header and last line as footer.(They need to be in each split xml file)
Header:
<?xml version="1.0"... (5 Replies)
Hi Team,
I have a file a1.txt with data as follows.
dfjakjf...asdfkasj</EnableQuotedIDs><SQL><SelectStatement modified='1' type='string'><!
The delimiter string: <SelectStatement modified='1' type='string'><!
dlm="<SelectStatement modified='1' type='string'><!
The above command is... (7 Replies)
Discussion started by: kmanivan82
7 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)