Hi,
I want to extract a part of filename and pass it as a parameter to one of the scripts. Could someone help.
File name:-
NLL_NAM_XXXXX.XXXXXXX_1_1.txt.
Here i have to extract only XXXXX.XXXXXXX and the position will be constant. that means that i have to extract some n characters from... (6 Replies)
Hi, I need
to make some extraction . with the following input to get the right output.
input: /etc/exp/home/bin ====> output: exp
and
input: aex1234 ===> output: ex
Thanks for your help, (4 Replies)
Hi All,
I am trying to write a small shell programming to get db2 database size info. The command I am going to use is- db2 "CALL GET_DBSIZE_INFO(?, ?, ?, -1)"
and the output of above command generally is-
Value of output parameters
--------------------------
Parameter Name :... (4 Replies)
Hi friends,
I want to select and use the certain part of a line. For example I have the following line
home/1245/hgdf/acsdf/myhome/afolder/H2O/endfile
how can I extract the part " /myhome/afolder/H2O/endfile "
thanks (6 Replies)
I have a file with 100s of lines of text. I want to perform an extraction of this line:
Info bpzs(pid=2652) using 1000 bits
I have not been able to extract it. Should I try expr match or is there another method? This line has data both in front of and in back of it. I do not have grep -o... (5 Replies)
Hello All,
I need to extract part of a file into a new file
My file is
Define schema xxxxxx
Insert into table
(
a
,b
,c
,d
)
values
(
1,
2,
3, (15 Replies)
Hi,
I have a string with name as 20140412-s1-Potopolive_promos_20140412. So I want to extract only Potopolive string. Could you please help me the command.
O/p : Potopolive
Thx in advance (5 Replies)
Hello All,
I have a file with details such as below. How do i extract only the
host and port ?
eg: dbs.ads.com 1521
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=dbs.ads.com)(PORT=1521))(CONNECT_DATA=(SID=vug)))... (5 Replies)
Discussion started by: JohnJacobChacko
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)