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Perl 6 Deep Dive

You're reading from  Perl 6 Deep Dive

Product type Book
Published in Sep 2017
Publisher Packt
ISBN-13 9781787282049
Pages 402 pages
Edition 1st Edition
Languages
Author (1):
Andrew Shitov Andrew Shitov
Profile icon Andrew Shitov

Table of Contents (15) Chapters

1. What is Perl 6? 2. Writing Code 3. Working with Variables and Built-in Data Types 4. Working with Operators 5. Control Flow 6. Subroutines 7. Modules 8. Object-Oriented Programming 9. Input and Output 10. Working with Exceptions 11. Regexes 12. Grammars 13. Concurrent Programming 14. Functional Programming 15. Reactive Programming

Using variables

In any programming language, variables are named pieces of memory that you can use to store a value as well as retrieve it. In Perl 6, a variable is a container that can host a value of one of the types, either built-in in the language or created by the user.

Declaring variables

Every variable must be declared before its use in the program. You don't need to declare all the variables at the beginning of the program. From a practical perspective, the point of declaration can (and should) be as close as possible to the place where it is first used. The most practical reason to do that is to make the visibility of the variable better—if you declare too early, you force the reader of your program to...

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