push 空内容push入数组会占位

#!/usr/bin/perl

use strict;
use warnings;

my $new = (0 ==1)?233:'';my @arr;
my $new_1 = (1==1)?233:'';
push @arr,$new_1;push @arr,$new;push @arr,'123456';
my $line = join "|",@arr;
print $line;
print "
";

#233||123456