lists in perl

Is the correct syntax to check if a list is empty in perl:

if(@list == 0)

thanks

 

If that doesn't work, use this

Code:

if(scalar(@list) == 0)
{
  #empty
}

 

You can use the following way also.

Code:

my @arr ;
if ( @arr )
{
    print "Array not empty\n";
}
else
{
    print "Array empty\n";
}

There is no need to use the scalar function.
By default this will be treated as scalar context

 

Another way to test whether a list is empty is as follows

Code:

my @arr ;
if ( $#arr== -1 )
{
    print "Array not empty\n";
}
else
{
    print "Array empty\n";
}

$# will contain the index value of a list.
If a list is not having any value means this will be -1.
If a list is having only one element means this will be 0 and so on.

 

Code:

unless(@arr)
{
  ## empty
}