Learn how to use the ternary conditional operator.
- [Voiceover] There is one more conditional structure…you should know about:…the ternary conditional operator,…which is borrowed straight from C.…It's a little confusing to look at…if you are not already familiar with it,…but it works really, really well.…Here is a working copy of conditional.pl…from chapter five of the exercise files.…And I'm actually just gonna get rid of all of that,…and I'm gonna say, if you want to know…which of these x or y is actually greater than the other,…and I'm gonna make one of them greater than the other,…easy way to do this is to say something like this:…say $x greater than $y,…question mark, x, colon, y.…
Like that.…So, how this works is it will…return one of these two values,…either the x or the y, depending upon the condition.…If the condition is true, it'll return the first one,…if the condition is not true, it will return the second one.…So when I run this, it says "y is greater than x".…If I make them the same, then it's still gonna say "y",…because the expression is not true,…
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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