Hello,
What are the options to print the contents of a directory in FIFO fashion?
I have searched the forum for something relative to this question and found no answers.
If there is a way please advise, if it has already been answered, please provide a link to the post.
Alternately if... (1 Reply)
Basically to illuminate i want to take a file with mutliple lines,
C:\searching4theseletters.txt
a
b
c
Read this into an array
@ARRAY
and then use this to compare against another file
C:\inputletters.txt
b
o
a
c
n
a (9 Replies)
Hi all
I am searching for a pattern in a file .
The file content is in a single line.If am doing a grep or sed for the a particular pattern am getting whole file.
I want the result in different lines.
attaching the file for reference
search pattern "/xxxxxx/hhhh/tttttttt/sss/" and... (4 Replies)
I'm currently working with dozens of FASTA files, and I'm tired of having to manually change the filename in my Perl script.
I'm trying to write a simple Perl script that'll create a 2-dimensional array containing the name of the folders and its contents.
For example, I would like the output... (6 Replies)
I am creating a report in groff and need to format data from a file into a
table cell.
Sample data:
dador,173323,bpt,jsp,39030013338878,1
dador,173323,brew,jsp,39030013338860,1
dador,173323,brew,jsp,39030013339447,1
dador,173323,brew,jsp,39030013339538,1
I would like to build a table... (12 Replies)
I do have a file with contents splited into multiple lines
ADSLHLJASHGLJSKAGHJJGAJSLGAHLSGHSAKBV
AJHALHALHGLAGLHGBJVFBJVLFDHADAH
GFJAGJAGAJFGAKGAKGFAK
AJHFAGAKAGAGKAKAKGKAGFGJDGDJJDGJDJDFAG
...
...
....
100's of lines
I would like to rearrange the content of this file so it will be a... (1 Reply)
Hi all,
I been looking for a solution to the fact that when I use:
for (i=1; i<=NF; i++) print $ifields that are originally in a single line are printed in a single line
I have severals files for which the first 7 are the same, but the number of variables after that can vary, for example NF... (5 Replies)
Hi there
I have a counter called
my $counter = 0;
I am trying to build an array that will have a name that is for example
my @array0 = ("some", "stuff");
but instead of hard coding the "0" in the array name i want to use whatever value the aforementioned $counter has in it...so
... (1 Reply)
ksh
eg
arrayname=(1 2 3 4 5)
I'm trying to display the individual contents of an array on a new line without using a loop, using one line of code.
output
1
2
3
4
5 (3 Replies)
Discussion started by: squrcles
3 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)