G'day guys, first post so be gentle.
I need help with some code to work out if a variable (string) contains any integers. The valid variable (string) must contain only letters.
Also need to be able to work out if a variable contains only integers.
Any help greatly appreciated. (7 Replies)
hi,
I need to create an IF condition. I read a line from a file and get the 5 word using space as a delimited. This word can have only two values either '*' or '1-5'
I need to write an IF condition for two cases. I can either compare it to * or 1-5(or even 1 by cutting and getting only the... (3 Replies)
Hi all,
is there an easy way to convert integer to string in bash?
I have numbers like 1, 2, ..., 112, ...
and I would like to get
001 002 003 004 ...
Thank you,
Sarah (4 Replies)
attempting the hangman program. This was an optional assignment from the professor. I have completed the logical coding, debugging now.
##I have an array $wordString that initializes to a string of dashes
##reflecting the number of letters in $theWord
##every time the user enters a (valid)... (5 Replies)
In each line of file, I wish to check if word1 is a non-connected subset of any of the other words in the line. If yes, keep only the words that ward1 is a subset of. Else, remove the whole line.
Also, I want to remove the letters that word1 doesn't match with, except for "_+"
Example file:... (2 Replies)
Hi Experts,
I am finding difficulty to get exact match:
file
OPERATING_SYSTEM=HP-UX
LOOPBACK_ADDRESS=127.0.0.1
INTERFACE_NAME="lan3"
IP_ADDRESS="10.53.52.241"
SUBNET_MASK="255.255.255.192"
BROADCAST_ADDRESS=""
INTERFACE_STATE=""
DHCP_ENABLE=0
INTERFACE_NAME="lan3:1"... (6 Replies)
I am on HP-UX using ksh in the script.
MaxSal=`sqlplus -silent /nolog <<EOF
connect / as sysdba
whenever sqlerror exit sql.sqlcode
set pagesize 0 feedback off verify off heading off echo off
select max(sal) from emp1;
select max(sal) from emp2;
select max(sal) from emp3;
exit;
EOF`... (3 Replies)
Hi there,
I am trying to remove al letters after : character on specific columns from 10th column till 827. I used sed and cut to do so but I am sure there is better one liner someone can think of from unix community members.
Huge file but it has this structure (Total number of Columns =... (10 Replies)
Discussion started by: daashti
10 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)