Discover how to display text on the console with print() and say().
- The print and say functions are used…for displaying text on the console.…They're also used for writing text to files and streams.…Here's a working copy of hello.pl…from chapter 13 of the Exercise Files.…The only difference between print and say…is that the say function adds a new line…at the end of its output.…So, if I come down here to our say function,…and I just copy and paste this a few times,…when I run it, you notice that the output…of each say function is on its own line.…
So, it outputs the string that's the argument,…or whatever's in the argument list.…And then, when it's all done with that,…it puts out a new line character,…so that any output after that starts on the next line.…And so, in this case, what output is after that…is another say function and then another one.…And they're all on the same line.…If instead I were to make this the print function…and use that three times, you notice that the output…is all on one line, because the print function…does not add that new line at the end of its output.…
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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