In this movie, you'll cover getting a list of matches with the /g modifier.
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- Sometimes you need more than just…a fixed number of matches from a regular expression.…In this lesson, I'll show you how to get a list of matches.…Let's say I want to know what letters come after…the letter "i" in my string.…So, if I look at my string I see I have I-S, I-S, and I-N,…so I want to get a list of those letters after the i,…so, again, the list would consist…of a "s", another "s", and an "n".…So, instead of this here I'm going to create an array…from a regular expression.…
So my regular expression says whatever comes after the "i",…and I've got that in parentheses, and I have the /g…which means to search globally throughout the string,…not to stop after the first match.…And it'll return those results as a list…and put them into the array.…So I'm going to say "foreach" my array…and we'll go ahead and run it.…And there's my "s", another "s", and an "n",…and so it's that "s", and that "s", and that "n".…So this uses the match operator on a list context,…and the parentheses specifies what is going…to be returned as each element in the list,…
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
Foundations of Programming: Refactoring Codewith Simon Allardice1h 44m 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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