How do you get the name of variable?

[super_gunda]

Hi,

I am checking if a variable is defined or not.
If the variable is not defined, i want the print the variable name and say 'this variable is not defined'.

Do any of you know any hack to print the name of the variable?

Thanks!
R

[FishMonger]

Do you want this:
use strict;
use warnings;

my $var;

print defined $var ? "\$var has a value of '$var'\n" : "\$var is not defined\n";

$var = 'some val';

print defined $var ? "\$var has a value of '$var'\n" : "\$var is not defined\n";

[super_gunda]

What if I have my code like this?
How do i tell which var is not defined?

use strict;
use warnings;

my $var123,$sdf,$a123;

IsDefined($var123,$sdf,$a123);

sub IsDefined
{
my @varList = @_;

foreach my $var (@varList)
{
unless(defined($var)){
print defined $var ? "\$var has a value of '$var'\n" : "\$var is not defined\n";

}
}
return "pass";
}

[FishMonger]

It sounds like you're asking how to use symbolic references, which is not a good idea. To find out why read this perldoc

perldoc -q 'variable as a variable name'

You really should be using a hash.