I am trying to match mulitple (3) variables. I found the sub given below on the web which works well when all vars are defined. But there are situations where one or two will not be defined (at least one will always be defined.)
Example of the variable content possibilities
Quote:
$p = 1676:790 #works good with sub
$l = 1676:790
$r = 1676:790
$p = 1676:790 #works good with sub
$l = 1763:890
$r = 1676:790
$p = 1676:790 #doesnt work as expected.
$l
$r
$p = 1676:790 #doesnt work as expected. Gives the "not" response when It should actually be "ok."
$l = 1676:790
$r
The sub found on the web.
If only one var is defined, then I dont want to do anything (no other var to compare)
If 2 or more vars are defined compare them, ignore the undefined.
Hi everyone, and thank you for your help with this. I am VERY new with perl so all of your help is appreciated. I have tried google but as I don't know the proper terms to search for and could be daunting for a newbie scripter... I know this is very easy for most of you! Thanks!
I have a... (4 Replies)
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X 4T Solution 21 OCT 2011 37 .00
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X 4T Solution Solution Unlimited 11 Sep 2009 248 .00
to account 87654321 user3 user4
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I am completely new to perl programming. My father is helping me learn said programming language. However, I am stuck on one of the assignments he has given me, and I can't find very much help with it via google, either because I have a tiny attention span, or because I can be very very dense.
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hi
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eg
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Dear Perl users,
Could somebody help me how to fix my code so I can get my desired output.
Here is the data:
Pattern Gabriel
halo1
halo2
end
Pattern Andreas
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halo2
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Hi All,
i have a requirement where i have to run a script with at least 25 arguements and position of arguements can also change. the unapropriate way is like below. can we achieve this in more good and precise way??
#!/bin/ksh
##script is sample.ksh
age=$1
gender=$2
class=$3
.
.
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Discussion started by: alex_5161
1 Replies
LEARN ABOUT REDHAT
strict
strict(3pm) Perl Programmers Reference Guide strict(3pm)NAME
strict - Perl pragma to restrict unsafe constructs
SYNOPSIS
use strict;
use strict "vars";
use strict "refs";
use strict "subs";
use strict;
no strict "vars";
DESCRIPTION
If no import list is supplied, all possible restrictions are assumed. (This is the safest mode to operate in, but is sometimes too strict
for casual programming.) Currently, there are three possible things to be strict about: "subs", "vars", and "refs".
"strict refs"
This generates a runtime error if you use symbolic references (see perlref).
use strict 'refs';
$ref = $foo;
print $$ref; # ok
$ref = "foo";
print $$ref; # runtime error; normally ok
$file = "STDOUT";
print $file "Hi!"; # error; note: no comma after $file
There is one exception to this rule:
$bar = &{'foo'};
&$bar;
is allowed so that "goto &$AUTOLOAD" would not break under stricture.
"strict vars"
This generates a compile-time error if you access a variable that wasn't declared via "our" or "use vars", localized via "my()", or
wasn't fully qualified. Because this is to avoid variable suicide problems and subtle dynamic scoping issues, a merely local() vari-
able isn't good enough. See "my" in perlfunc and "local" in perlfunc.
use strict 'vars';
$X::foo = 1; # ok, fully qualified
my $foo = 10; # ok, my() var
local $foo = 9; # blows up
package Cinna;
our $bar; # Declares $bar in current package
$bar = 'HgS'; # ok, global declared via pragma
The local() generated a compile-time error because you just touched a global name without fully qualifying it.
Because of their special use by sort(), the variables $a and $b are exempted from this check.
"strict subs"
This disables the poetry optimization, generating a compile-time error if you try to use a bareword identifier that's not a subrou-
tine, unless it appears in curly braces or on the left hand side of the "=>" symbol.
use strict 'subs';
$SIG{PIPE} = Plumber; # blows up
$SIG{PIPE} = "Plumber"; # just fine: bareword in curlies always ok
$SIG{PIPE} = &Plumber; # preferred form
See "Pragmatic Modules" in perlmodlib.
perl v5.8.0 2002-06-01 strict(3pm)