Learn how to build a fully-functional module.
- [Voiceover] In this lesson, I'll take you through…a more functional version of our simple class.…Let's get started, here's a working copy…of hello.pl from Chapter 14 of the exercise files.…And I'm just going to come down here…and I'm going to say use better, BW, colon, colon, better.…And I'll create an object, and I'll go ahead…and get a value from it, and I'll display that value.…And when I run this, I did that wrong, dollar O number,…like that, and when I run this we get our value.…
So if we come over here to our better class,…again it's package BW better, because it's in the BW folder,…and we have the version, and we have our constructor.…Our constructor is a little bit refined,…and here's how this works, when the constructor…is called the name of the class is passed to it.…I'm putting this in this inv variable,…which to me stands for invocation.…And so I know the name of the class,…and I take that name of the class and…I assign it to a variable called class,…and it can either be a string or…it can be a reference, depending on…
Watch to learn the details of the Perl syntax, from variables, conditionals, loops, and data structures to regular expressions, functions, and references. A quick-start guide is included for experienced developers who want to get up and running with Perl 5 fast, and the entire course is recommended for both new and experienced programmers alike. Later chapters cover file handling and reusing code with Perl modules, plus Perl best coding practices.
- Understanding Perl's general syntax and the anatomy of a Perl script
- Writing statements and expressions
- Creating assignments
- Working with variables and strings
- Using data types effectively
- Defining logical flow with conditionals and loops
- Using special variables
- Using Perl operators
- Performing simple Perl programming tasks with expressions
- Matching data
- Defining and calling functions
- Using references
- Handling files in the file I/O
- Using built-in functions
- Reusing code with modules
- Coding with Perl best practices
Skill Level Intermediate
1. Setting Up
About Perl3m 36s
2. Quick Start
3. Basic Syntax
4. Values and Variables
7. Special Variables
9. Regular Expressions
11. References and Structures
12. File I/O
13. Built-In Functions
15. Best Practices
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