Perl’s split function has a useful feature that will split a string into characters. This works by supplying an empty regex pattern (“//”) to the split function. This can be used to easily split a word into an array of letters, for example:
A popular way to build a list of literal quotes in Perl is to use the quote whitespace operator (qw). It’s terse, versatile and elegant. To see why, let’s look at a typical statement using a list of strings:
A typical way to print every element of an array in Perl is using a foreach loop:
You get the idea - Perl has a repetition operator (x) that repeats the scalar or list on its left by the number on it’s right (like multiplication).
Perl has many string functions, let’s take a look at a some of the most common ones: concatenate, substring and split.
Broadly speaking Perl has two types of strings: quotes that are interpolated at runtime and literal quotes that are not interpolated. Let’s review each of these in turn.
A Beginner’s Introduction to Perl 5.10 talked about the core elements of Perl: variables (scalars, arrays, and hashes), math operators and some basic flow control (the for statement). Now it’s time to interact with the world. (A Beginner’s Introduction…
To get in touch, send an email to perl.com-editor@perl.org, or submit an issue to tpf/perldotcom on GitHub.
This work is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License.
Perl.com and the authors make no representations with respect to the accuracy or completeness of the contents of all work on this website and specifically disclaim all warranties, including without limitation warranties of fitness for a particular purpose. The information published on this website may not be suitable for every situation. All work on this website is provided with the understanding that Perl.com and the authors are not engaged in rendering professional services. Neither Perl.com nor the authors shall be liable for damages arising herefrom.
