I had a variable 1:80 8 in one varialbe say var=1:80 8
i comapred the below
if
then
--
else
----
thought if condition is true its always going in the else condition....its not giving any compilation errror also....is there any problem bcoz of space...
can some one help... (3 Replies)
Hi
I know its a dumb question but can any one please explain me the difference of executing a shell script in the following 2 ways.
. script.sh
sh script.sh
I have a problem if I execute the following code as sh script.sh
DB_CNT_ALW=0.20
SCT_VAR=0.05
if ; then
echo "== Difference... (3 Replies)
Hi,
As all of us know that size of int is machine as well as compiler dependent
we can get the range and size of an int , float and char etc in
/usr/include/limits.h
header file of a compiler
but could any one tell me how to get info of precision of float and ... (6 Replies)
HI!
What is the notation which correspond to C's
doubleandfloatin Perl??
Please tell me.
Thanks.
Well what I want to do is, for example, calculatingsqrt(2)in two way: float and double. (5 Replies)
i am adding two floating point numbers and i want to store in a character pointer...
float f1 ;
float f2 ;
char *c = NULL;
printf("Enter 2 floating numbers\n");
scanf("%f %f",&f1,&f2);
f1 = f1+f2;
sprintf(c, "%f", f1 );
when i execute this, i am... (3 Replies)
I have a file with 2 columns . One of the line looks like the following.
Is it possible to convert every float no in column 2 to integer.
input
NM_032881 6.03787973608527e-05
output
0.0000603787..... (2 Replies)
:confused:We have two servers one active and one stand by
as follows Active 202.61.9.9
Stand by 202.61.9.10
Float IP 202.61.9.8
What is use of this float IP?
How it is configured? (1 Reply)
Hi,
I have small problem to print float value in the fallowing code
float Cx, W,f=250000, Cr=92.00,pi=3.14;
W=2*pi*f;
Cx = 1/W.Cr; //Cx value will be come around like 7.07E-9.
printf("capacitance value: %.10f",Cx);
I am trying to print Cx value using above code but it was not... (3 Replies)
Discussion started by: veerubiji
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)