How can we avoid the use of system command inside awk program?
Is there any alternative way in awk programming for removing files, sorting files and to find the differences between two file without using a system command?
Eg:
system("rm tempfil006");
How to avoid the use of system in above... (0 Replies)
Hi All,
I have 1 million records file. Using awk, I am counting the number of records. But as the number is huge, after crossing a number, awk is displaying it in exponential format.
At the end, I need to verify this count given by awk with expected count.
But as it is in exponential format,... (3 Replies)
Hi...
I need a help in using the awk command or any other solution to avoid the usage of loops.
My question is :
I have a input like this :
field1|field2|field3|field4|field5|field6|field7|field8|field9
ex : 4000|testing|scenario|14450|500|320|450|200|100
where the... (2 Replies)
I have various numbers that I'm printing out from a statistical summary script. I'd like it to stop using exponential format. Of course, I can use printf with 'd' and 'f' and various parameters to specify a format, but then it has other undesirable effects, like tacking on extra 0's or truncating... (0 Replies)
Hi everyone,
Looking for a suggestion to improve the below script in which I´ve been working.
The thing is I have 3 separated AWK scripts that I need to apply over the inputfile, and for scripts (2) and (3) I have to use a "temp" file as their inputfile (inputfile_temp and inputfile_temp1... (2 Replies)
Hi friends,
I have a file list1 which has these 2 columns like
616449 0
434453 1
2151083 0
2226536 0
2132382 0
2136814 0
I have to put the result of col1 -col2 into another file list2 linewise.
e.g. It gives the below result if use the below code:
awk '{ print $1 - $2 }' list1 >... (2 Replies)
I have the below awk command to search a row and find the line number. It returns the value in exponential. I understand we can use the print "%.0f\n" to convert the exponential. I wanted to have this in my awk command. Can anyone advise
bnd=`awk '/^GS/{p=NR}$0~"^ABC.*\\*"k{f=1}/^GE/&&f{print... (3 Replies)
Hi Friends,
My input
Gene1 4.14887050399078e-49
Gene2 5.39999891278828e-10
Gene 2.22108326729483e-11
How do I change the above exponential values to normal values?
Thanks (3 Replies)
Discussion started by: jacobs.smith
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)