Perl tr Function

Description

This is not a function. This is the transliteration operator; it replaces all occurrences of the characters in SEARCHLIST with the characters in REPLACEMENTLIST.

Syntax

Following is the simple syntax for this function −

tr/SEARCHLIST/REPLACEMENTLIST/

Return Value

This function returns number of characters replaced or deleted.

Example

Following is the example code showing its basic usage −

#!/usr/bin/perl -w

$string = 'the cat sat on the mat.';
$string =~ tr/a-z/b/d;

print "$string\n";

When above code is executed, it produces the following result. Here option d is used to delete matched characters.

 b b   b.