I have a problem with my loops. I have a file called users.dat, it has all the users in it. Then I extracted a list of users sending out number of mails with date from Netscape logs. The extracted list (mailuse.dat) has 3 fields: username, number of mails, date. (One user can show up several... (2 Replies)
Hi people,
I've encountered a problem. I have a data file like:
asd:$123:2
zxc:$456:4
But when I want to extract "$123" and get the number with this command:
echo $123 | cut -c 1-10
Im returned with 23 instead of 123.
Please help me out, thanks. (4 Replies)
Given the following text in a file named extract.txt:
listenPort:=25
smtpDestination:=2
enableSSL:=
I am trying to extract only the value 2 following smtpDestination:=
Someone had suggested I use:
sed -e "s/^smtpDestination:=\(.*\)$/\1/" extract.txt
but this returns:
listenPort:=25
2
... (2 Replies)
I have attached a txt file, what I would like to be able to do is:
1. Extract Data from Columns labeled E/N and Ko into a new file
2. Then in the new file I would like to be able to plot E/N on the X axis and Ko on the y axis.
3. Lastly I would like to be able to extract multiple data sets and... (6 Replies)
Hi,
I have one file, say file 1, that has data like below where 19900107 is the date,
19900107 12 144 129 0.7380047
19900108 12 168 129 0.3149017
19900109 12 192 129 3.2766666E-02
... (3 Replies)
I have a txt file of the following format
>ab_
qwerty
>rt_
hfjkil
>Ty2
hglashglkasghkf;
>P2
aklhfklflkkgfgkfl
>ui_
vnllkdskkkffkfkkf
>we32
vksksjksj;lslsf'sk's's
....
.....
I want to split this big file based on the header (>) (5 Replies)
I am trying to compare the data in lines 3 & 5 to see if they match up to the '-S570' (see first code set, all proprietary information has been removed from code set)
spawn telnet
Trying ...
Connected to CA-LOS1234-ASE-S570.cl .
Escape character is '^]'.
CA-LOS1234-ASE-S570
Username: ... (1 Reply)
Hi all
Really need some help here, i have a vector of pointer "vector<*e.g>store" i need to delete one of the chosen container and it seem like the normal way of deleting a vector cannot work!
P.S new to polymorphism
Thank
Here is a cut out of my codes
for(unsigned... (1 Reply)
This is my input file:
a|b|c(ef)|g|h(km)|p
My output file should look like:
a|b|ef|g|km|p
That is, pipe is the delimiter. The data within pipe must be displayed as it is but if it encounters any data within parentheses, then only the data within parentheses has to be displayed ( the data... (2 Replies)
Hi Everyone,
I have a very simple problem and i am stuck in that from last 8 days. I tried many attempts, googled my query but all in vain.
I have a text file named "test.txt"
In that suppose i have contents like:
Java:
1 Object oriented programming language
2 Concepts of Abstraction... (5 Replies)
Discussion started by: Abhijeet Anand
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)