Learn how to iterate with the C-style for loop.
- [Voiceover] Perl's for loop comes…in two forms, a traditional for loop…as found in C and an iterative for loop.…In this movie, we'll cover the traditional C based for loop.…Here's a working copy of for.pl…from chapter six of the exercise files…and you'll notice that I have an array…that has five strings in it and these five strings…are created with the quote word operator…and the strings are the words…one, two, three, four and five.…In this case, I'm iterating through the array…using the for loop and so when I run this you'll see it…lists these strings one, two, three, four and five…using the say function there in the for loop.…
So the syntax of the for loop is borrowed directly from C.…It takes three arguments and the arguments…are separated by semi-colons.…So you can see them here my $i = 0.…That's the initializer.…That's the first argument is the initializer.…It initializes a variable.…It's usually used to initalize a variable for the loop.…It's actually just an expression…that is evaluated one time before the loop begins…
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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