How do lists and arrays work?
- [Voiceover] A list is a fixed series of scalar values.…For example, here is a working copy of hello.pl…from chapter four of the exercise files,…and if I come down here and say in parentheses,…1, 2, 3, and build and run,…you see I get a 1, a 2, and a 3,…all right next to each other like that.…That's because in parentheses those three values,…separated by commas, are a list.…
A list is enclosed in parentheses…and the elements in the list are separated with commas.…You can easily iterate a list using foreach…and we'll talk more about loops later in this course,…but for now, foreach looks like this,…or at least on kind of foreach looks like this.…If I save and run, you see it says, 1, 2, 3…on separate lines so say is now being called…foreach value in the list.…List elements may be numbers, strings, or any scalar.…
So instead of these numbers, I can use strings,…and save and run, and you see we have that result…that we expect.…You may use the quote word operator…to easily create a list of strings and that looks like this.…
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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