Discover how operators work in Perl.
- [Voiceover] Perl provides a very rich set of operators…for many different purposes.…Before we get in to the details,…let's consider what an operator is…and how it works.…An operator takes operands…and returns a value.…For example,…here's a very simple line of code.…It contains two operators.…The addition operator takes two operands…and returns the sum of the operands.…The assignment operator takes two operands…and copies the value of the right-hand side…to the variable on the left-hand side.…
In Perl,…most operators determine the operation…that is performed without concern…for the type of the operands.…For example,…in this expression the addition operator…adds two numbers.…Perl will first try to convert the scaler variables…to numeric values…and if it is unable to do this,…it will throw an error.…This means that Perl must have different versions…of some operators for numeric or string context.…In this case the double equal operator…compares two numeric values for equality…while the eq operator compares two string values…
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
- Mark as unwatched
- Mark all as unwatched
Are you sure you want to mark all the videos in this course as unwatched?
This will not affect your course history, your reports, or your certificates of completion for this course.Cancel
Take notes with your new membership!
Type in the entry box, then click Enter to save your note.
1:30Press on any video thumbnail to jump immediately to the timecode shown.
Notes are saved with you account but can also be exported as plain text, MS Word, PDF, Google Doc, or Evernote.