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How to replace array elements in Perl using the splice() method

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Overview

We can use the splice method to remove the elements of an array and replace them with the ones we specify.

Syntax

splice(@array, start, no_of_el, new_el)

Parameters

  • @array: This is the array whose elements we want to replace.

  • start: This is the index position from which to start the replacement.

  • no_of_el: TThis is the number of elements to replace.

  • new_el: This is the new element or elements that will replace the current elements of the array.

Return value

A new array with new elements that replaced the previous ones is returned.

Example

# create arrays
@arr1 = ("a", "b", "d", "d", "e");
@arr2 = (10, 70, 80, 90, 50);

# replace elements
splice(@arr1, 2, 1, "c");
splice(@arr2, 1, 3, (20, 30, 40));
# print array
print "@arr1\n";
print "@arr2";
Replacing array elements with new ones in Perl using splice() method

Explanation

  • Lines 2–3: We create arrays arr1 and arr2.
  • Line 6: We use the splice() method to remove the element at index 2 of array arr1. It should only replace 1 element. The replacement should be "c".
  • Line 7: We use the splice() method to remove the element at index 1 of array arr2. It should replace 3 elements. The replacements should be elements 20, 30, and 40.
  • Lines 9–10: We print the arrays.

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splice
array
perl
communitycreator
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