Hi all
Is there a way in awk to know that you are processing your final line of input if you do no know how many lines were in the input to begin with?
Thanks (7 Replies)
I am trying to process file which has following data
#23456789012345
ACNASPSA13N0N0
ACNAPCPA05N0N0
ACNAFATS11N0N0
I want to take out each line from the file and what to put in the file by name which if part of the line starting from offset 10 to 15. It means I want to create three file... (3 Replies)
I have a file, first 5 columns are very normal, like "1107",106027,71400,"Y","BIOLOGY",,
however, the 6th columns, the user can put comments, anything, just any characters, like new line, double quote, single quote, whatever from the keyboard, like"Please load my previous SOM597G course content in... (3 Replies)
Input File:
1234, 2345,abc
1,24141,gw
222,rff,sds
2232145,sdsd,121
Output file to be generated:
000001234,2345,abc
000000001,24141,gw
000000222,rff,sds
002232145,sdsd,121
i.e; the first column is padded to get 9 digits.
I tried with following: (1 Reply)
Hello,
I extracted a list of files in a directory with the command ls . However this is not my computer, so the ls functionality has been revamped so that it gives the filesizes in front like this :
This is the output of ls command : I stored the output in a file filelist
1.1M... (5 Replies)
I dispose of two tab-delimited files (the first column is the primary key):
File 1 (there are multiple rows sharing the same key, I cannot merge them)
A 28,29,30,31
A 17,18,19
B 11,13,14,15
B 8,9File 2 (there is one only row beginning with a given key)
A 2,8,18,30,31
B ... (3 Replies)
hello All, I'm new to AWK programming and learned myself few things to process a file and deal with duplicate lines, but I got into a scenario which makes me clueless to handle. Here is the scenario..
Input file:
user role
----- ----
AAA add
AAA delete
BBB delete
CCC delete
DDD ... (10 Replies)
Hi,my file is in this format
",
\"symbol\": \"Rbm38\"
} ]"
I want to convert it to a more user readable format
_id pubmed text symbol
67196 18667844 Overexpression of UBE2T in NIH3T3 cells significantly promoted colony formation in mouse cell cultures Ube2t
56190 21764855 ... (3 Replies)
Discussion started by: biofreek
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)