Tech Insights

Sorting The sort function sorts a list (an array). The default is to sort alphabetically. However, you can define your […]

Using the Perl index() function Introduction The index() function is used to determine the position of a letter or a

Understanding the foreach keyword A foreach loop is used to iterate over each element of a list. The basic syntax

How can I count the separator characters in a string? You have a string, which you are splitting. For example:

How can I access the individual characters in a string? Before answering this faq, we ask that you consider the

How do I use taint mode? What is taint mode? Taint mode is a way of making your code more

Interpolation in Perl This page shows how variable interpolation works in Perl. Interpolation, meaning “introducing or inserting something”, is the

Writing a CGI upload form In this tutorial you will learn how to write a perl CGI form that allows

Writing a CGI form In this tutorial you will learn how to write a perl CGI form. If you have