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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

Working with files and directories

Working with files in Perl 6, as well as in many other languages, is done via file handles. You get the file handle as soon as you open a file; later, you use the handle to write to a file or to read from it. All the other operations, such as flushing a buffer or closing a file, are also performed via the handle.

Opening a file

To open a file, use the open function (it is supplied by the IO role but can be used as a simple built-in function). It takes the path to the file and a number of optional parameters. The return value is a file handle, as shown:

my $fh = open '/etc/passwd';

By default, the file is opened in the read-only mode. It is possible to pass the mode name explicitly...

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