What will be the value of $keys ? my $var; if (exists $var->{key1}->{key2}) { $var->{key1}->{key2} = 1; } my $keys = keys(%{$var});
Reveal answer
Fill a bubble to check yourself
Keep practicing — related questions
- What will be the value of $keys? my %hash; $hash{undef} = undef; $hash{''} = ''; my $keys = keys(%hash);
- Which of the following is not valid PHP code?
- What will be the value of $size after executing the following code?my @a = (0, 1, 2);$#a = 0;my $size = @a;
- What will be the value of $val? my $str = 'aa bb cccc'; my $val = () = $str =~ /\w+/g;
- What will be printed?my @a = (1, undef, 2);my \$sum = 0;foreach my \$val (@a) { eval { \$sum += foo(\$val);...
- Assume that $var has the value hello . What is the value of the following sting? q (It’s time to say $var);
- Assume that $var has the value hello . What is the value of the following sting?q (It’s time to say $var);
- Assume that $var has the value hello . What is the value of the following sting?qq(It’s time to say $var);