In this movie, you'll practice using alternate quote operators.
- [Voiceover] Perl provides a number of…alternate quote operators.…These are particularly useful in cases…where normal quotes may not work easily.…And you notice I run this, it says…"Hello, World" in the output.…Now let's say that I didn't wanna…use the quote marks for whatever reason,…and we'll talk about reasons in a minute.…Instead, I could use the letter Q…and a pair of matching characters.…So I can use an opening parenthesis here…and a closing parenthesis here,…instead of the closing quote mark,…and save and run,…and you'll notice that the output is exactly the same.…
So what are some reasons that I might wanna do this?…Perhaps I wanted to use regular quote marks…inside of the string, and so if I do that,…now our output says "Hello, World" with the quotes.…But if I were to try that with the regular quote marks,…I would get an error about a Bareword.…Missing operator before World.…So that doesn't work.…So instead, I can use these alternate quote marks like this,…and the output is what I expect.…
The script now works.…
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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