Hi,
I am trying to make an associative array to use in a popup_menu on a website. Here is what i have:
foreach $entr ( @entries )
{
$temp_uid = $entr->get_value(uid);
$temp_naam = $entr->get_value(sn);
$s++;
}
This is the popup_menu i want to use it in.
popup_menu(-name=>'modcon',... (4 Replies)
Hi,
When using sort on an associative array:
foreach $key (sort(keys(%opalfabet))){
$value = $opalfabet{$key};
$result .= $value;
}
How does it handle double values?
It seems to me that it removes them, is that true? If so, is there a way to get... (2 Replies)
Hi Friends,
I have many files like below.
total,0.7%,0.0%,0.2%,0.0%,0.2%,0.7%,98.0%
total,1.9%,0.0%,0.4%,0.0%,0.0%,6.8%,90.6%
total,0.9%,0.0%,0.4%,0.0%,0.0%,0.0%,98.5%
total,1.4%,0.0%,0.7%,0.0%,0.2%,2.9%,94.5%
total,0.7%,0.0%,0.4%,0.0%,0.0%,0.9%,97.7%... (13 Replies)
Hi All,
I got stuck up with shell script where i use awk. The scenario which i am working on is as below.
I have a file text.txt with contents
COL1 COL2 COL3 COL4
1 A 500 400
1 B 500 400
1 A 500 200
2 A 290 300
2 B 290 280
3 C 100 100
I could able to sum col 3 and col4 based on... (3 Replies)
I have an associative array named table
declare -A table
table="fruit"
table="veggie"
table="GT"
table="eminem"
Now say I have a variable returning the value highway
How do I find corresponding value GT ??
(this value that I find (GT in this case) is supposed to be the name of a mysql... (1 Reply)
Hi all
I have a problem where i have a large list ( up to 1000 of items) and need to have 2 items pulled from it into variables in a bash script
my list is like the following and I could have it as an array or possibly an external text file maintained separately. Every line is different and... (6 Replies)
Continuing my quest to learn BASH, Bourne, Awk, Grep, etc. on my own through the use of a few books. I've come to an exercise that has me absolutely stumped.
The specifics:
1. Using ONLY BASH scripting commands (not sed, awk, etc.), write a script to convert a string on the command line to... (22 Replies)
Hello together,
i make something wrong... I want an array that contains information to associate it for further processing.
Here is something from my bash... You will know, what I'm trying to do.
I have to point out in advance, that the variable $SYSOS is changing and not as static as in my... (2 Replies)
I am trying to assign indexes to an associative array in a for loop but I have to use an eval command to make it work, this doesn't seem correct I don't have to do this with regular arrays
For example, the following assignment fails without the eval command:
#! /bin/bash
read -d "\0" -a... (19 Replies)
Hello.
I have an export of an associative array build using declare -p SOME_ARRAY_NAME > SOME_FILE_NAME.txt.
Producing some thing like declare -A SOME_ARRAY_NAME=( ="some_text" ="a_text" ......... ="another_text" ) in a text file.
I have a stock of functions which are sourced from... (1 Reply)
Discussion started by: jcdole
1 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)