How do I print an index of an array in Perl?

Here, $#array is the maximum index of the array.

  1. @array = (you, me, us);
  2. $array[5] = 4;
  3. $size = @array;
  4. $index_max = $#array;
  5. print “Size: $size\n”;
  6. print “Maximum Index: $index_max\n”;

How do I get the last index of an array in Perl?

Perl returns element referred to by a negative index from the end of the array. For example, $days[-1] returns the last element of the array @days . You can access multiple array elements at a time using the same technique as the list slice.

How do I print the length of an array in Perl?

Get the size of an array. $size = @array; print “size of array: $size. \n”; Explicit scalar context can be achieved by using the function scalar. $size = scalar @array; print “size of array: $size.

How do I get the first element of an array in Perl?

To refer to a single element of an array, the variable name must start with a $ followed by the index of the element in square brackets ( [] ). The index of the first array element is 0.

How do you get the index of an element in a list in Perl?

The code with core perl functions:

  1. my ($index) = grep { $planets[$_] eq ‘Mars’ } (0 .. @planets-1);
  2. say defined $index? $index : -1;

What does $# mean in Perl?

EDIT: from perldoc perlvar : $# is also used as sigil, which, when prepended on the name of an array, gives the index of the last element in that array. my @array = (“a”, “b”, “c”); my $last_index = $#array; # $last_index is 2 for my $i (0 .. $#array) { print “The value of index $i is $array[$i]\n”; }

How do I print a variable in Perl?

In any real-world Perl script you’ll need to print the value of your Perl variables. To print a variable as part of a a string, just use the Perl printing syntax as shown in this example: $name = ‘Alvin’; print “Hello, world, from $name.

How do I print in Perl?

print() operator – print operator in Perl is used to print the values of the expressions in a List passed to it as an argument. Print operator prints whatever is passed to it as an argument whether it be a string, a number, a variable or anything. Double-quotes(“”) is used as a delimiter to this operator.