When is a value a string?
- [Voiceover] In Perl, a String value…is one that can be represented as a string.…So here's a working copy of hello.pl,…from Chapter 4 of the Exercise Files.…And if I Save and Build and Run,…you see it says, "Hello, World!"…I'm gonna come down here, and I'm gonna change this.…Instead I'm going to say, my dollar S equals…"Hello, World!"…And say, S is,…and I'm gonna put dollar S…in square brackets here…so that we can see the boundaries…of the String when we display it.…
And so I'm gonna Save and Run, and you can see…it says, S is "Hello, World," and "Hello, World,"…with a comma and the exclamation point…is inside those square brackets…so we can see where the boundaries of the String are.…This helps us in circumstances like if I were…to put a space in here, Save and Run, see,…that space shows up and we can see the space clearly…because we have the brackets around the variable.…So this is a String variable…because it can be represented as a string.…
And so I can treat it as a string,…and I can do something 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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