Replacing Array Elements

Replacing Array Elements

Now we are going to introduce one more function called splice(), which has following syntax:

splice @ARRAY, OFFSET [ , LENGTH [ , LIST ] ]

This function will remove the elements of @ARRAY designated by OFFSET and LENGTH, and replaces them with LIST, if specified. Finally it returns the elements removed from the array. Following is the example:

#! /usr/bin/perl

@nums = (1..20);

print "Before - @nums\n";

splice(@nums, 5, 5, 21..25); 

print "After - @nums\n";

This will produce following result:

Before - 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

After - 1 2 3 4 5 21 22 23 24 25 11 12 13 14 15 16 17 18 19 20

Here actual replacement begins with the 6th number after that five elements are then replaced from 6 to 10 with the numbers 21, 22, 23, 24 and 25.