Be selective with your comments and whitespace.
- [Voiceover] Comments and white space…are important tools in making your code…easy to read and manage…long after you originally wrote it.…Here's BW Better.pm…from chapter 15 of the exercise files.…This version's a little bit cleaned up…and has comments added.…Good comments are simple, direct,…informative and not overly verbose.…Not too little, not too much, just right.…So here we have a little header at the top,…sometimes my headers are bigger than this…and they might have a little bit of a history…but if they get to be more than five or six lines,…I'm gonna cut some of that stuff out,…maybe put it in a readme file or something like this,…in this case this is really sufficient.…
It says what it is, it's an example…Perl module for this course.…Here's my constructor, again,…I have just a simple comment up at the top,…this one's two lines long,…it says that it's a constructor,…it tells how to use the constructor…and it mentions that if you omit the number…a zero will be provided, and then down here in the code,…you notice I have a little comment that says…
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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