Create and use references to arrays and anonymous arrays.
- [Voiceover] Array references are…a common technique in Perl.…They are simple, convenient,…and you'll probably use them often.…Here's a working copy of arrayref.pl…from chapter 11 of the exercise files.…You'll notice down here on line seven,…I have an array and that array is initialized…using the quote word operator.…And then I take the reference of the array…using the reference backslash operator,…and I assign it to the scalar,…which now contains the reference to the array.…
And then I use that reference for the foreach loop.…I'm dereferencing using the at operator…to say that I'm getting the entire array from the reference.…And the reference itself is inside of curly brackets.…So when I save this and run it,…you see it does exactly what we expect.…It passes each individual element of the array…to the console using say.…It's worth noting here that in many cases,…it's possible and allowable and legal…to omit those curly brackets.…
And when I save this and run it,…you'll notice it still works.…Personally, I suggest that you…
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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