I'm having a problem with a macro i put in my .exrc file.
Here's what I put: map #I ^[
^ [ is control-v and the escape key.
It places a # a the beginning of a line by simply hitting the # on the keyboard. Problem is, now when I hit "o" or "O" to move up or down a line, it places a # at... (1 Reply)
I'm upleveling code from 10.20 to 11.11....but I'm running into a problem in which the USRSTACK macro does not seem to be defined in 11.11. Has anybody else experienced this/fixed it/worked around it? Is there a different macro I should be using instead?
Thanks for any info you can provide!! (1 Reply)
Hi,
In my application I have some number c files. In each of the file the following line will be the first statement.
#ident "@(#) set.c 14.1.2.2 05/15/01 17:06:32"
I would like to know what is the use of the above statement.
Thanks
Sarwan (1 Reply)
Linux, C++, make, macro
In source code, we used some #ifdef macros. How can I enable #ifdef macro in the command line of "make" (NOTE: I do NOT want to change source code or makefile to define that macro from time to time).
e.g. test.cpp:
...
#ifdef TEST1
// code segment for test1
...... (3 Replies)
Hi,
I just opened one old RH box and found number of "macros" in there, that how they called in how-to doc, let say you type <rx> and this does a lot of stuff.
I can't figure out how it work, how I can edit/display these macros? Can anybody point to the right directions? I have some academic... (3 Replies)
Hi everyone,
What I am trying to do is assign a F-key a macro to save a file in vi and display said file in firefox. The details are as follows:
I am using a Win 7 laptop with and ssh program to log into a unix system.
What I am trying to do is figure out how to bring up the firefox... (1 Reply)
Hey guys, thanks for lookin....my question is I want to create a macro on HPUX to SFTP a .xls to my Windows Server....I have exstensively searched and all I can find is What a macro is not how to create one.
Reasoning for having a macro is to put it in a file creation script and have it run at... (7 Replies)
Can some body explain this part in a header file for me?
#include <limits.h>
#define BIGNUM unsigned long long
typedef BIGNUM (*hash_t) (char *str);
......I have hard time for the second part:
typedef BIGNUM (*hash_t) (char *str); First, I could not find the definition of hash_t, which... (1 Reply)
Discussion started by: yifangt
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)