given a relative path, how do i convert it into a full one. i.e. if i am in
/home/polypus
and i am given foo/bar then to get a full path i can just concatinate it with pwd, but what if i am given "../mama"
how do i programmatically convert:
/home/polypus and ../mama into ... (4 Replies)
Hi,
I am trying to develop a simple program that uses Sockets. I have a windows machine and MUST use C++. I found out that I can use C's Socket (#include <sys/socket.h>) API calls, but this is only possible on a unix machine. So I installed Cygwin to imitate a unix environment on my windows... (4 Replies)
This has been bugging me for a while. How can i list file to show full path.
/directory/test
$ ls file.tst
file.tst
$
desired output:
/directory/test/file.tst (2 Replies)
Hi,
My name is Daniel and I'm spanish, so I'm sorry if you can't undertand something becouse of my low-level english.
Something stranger is happening to me with socket++ library and I don't know how to work on it.
I has a library called commands.so and the sslclient is and object of that... (4 Replies)
Hi,
I have a file abcd.txt which has contents in the form of full path file names i.e.
$home> vi abcd.txt
/a/b/c/r1.txt
/q/w/e/r2.txt
/z/x/c/r3.txt
Now I want to retrieve only the directory path name for each row
i.e
/a/b/c/
/q/w/e/
How to get the same through shell script?... (7 Replies)
Hey
I'm new to the forums here, and I'm seeking help for this script that I'm writing. When I do ls -l of a directory it shows the full pathname for files in it. For example, if the directory is /internet/post/forum/ and the file is topic, it currently shows internet/post/forum/topic. What's the... (3 Replies)
My product has 2 libraries say "x & y".
x depends on y.
During the installation of my products package, user will be prompted for his own location to copy my product libraries.
Installation will copy libraries "x & y" and create my product specific ENV variable say "MYPATH" pointing to User... (4 Replies)
I have a small script to send copies of files to another computer used for tests but in the same location:pwd=`pwd`
for i in "$@"
do
echo "rcp -p $i comp-2:$pwd/$i"
rcp -p $i comp-2:$pwd/$i
echo "Finished with $i"
doneIs there a way I can check the parameter to see if it is a full... (5 Replies)
Discussion started by: wbport
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)