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The STD is a full grammar for Perl 6 and is written in Perl 6. In theory, anything capable of parsing the STD and generating executable code is a suitable bootstrapping system for Perl 6. kp6 is currently compiled by mp6 and can work with multiple backends. [27] [28] mp6 and kp6 are not full Perl 6 implementations and are designed only to ...
Perl 5 hashes are flat: keys are strings and values are scalars. However, values may be references to arrays or other hashes, and the standard Perl 5 module Tie::RefHash enables hashes to be used with reference keys. A hash variable is marked by a % sigil, to distinguish it from scalar, array, and other data types.
The Perl On New Internal Engine (PONIE) project existed from 2003 until 2006. It was to be a bridge between Perl 5 and 6, and an effort to rewrite the Perl 5 interpreter to run on the Perl 6 Parrot virtual machine. The goal was to ensure the future of the millions of lines of Perl 5 code at thousands of companies around the world. [53]
[6] [7] The main data types in perl are: Scalars; Arrays; Hashes; Filehandles; Subroutines; Typeglobs; Perl control structures; Perl modules - modular extensions of the Perl language. The following modules (and module groups) and many more, including support for them (manuals, etc.) can be found on CPAN.org, using its search box:
Learning Perl, also known as the llama book, [1] is a tutorial book for the Perl programming language, and is published by O'Reilly Media.The first edition (1993) was authored solely by Randal L. Schwartz, and covered Perl 4.
^d Although Perl doesn't have records, because Perl's type system allows different data types to be in an array, "hashes" (associative arrays) that don't have a variable index would effectively be the same as records. ^e Enumerations in this language are algebraic types with only nullary constructors
For those not using Perl 5.10, the Perl documentation describes a half-dozen ways to achieve the same effect by using other control structures. There is also a Switch module, which provides functionality modeled on that of sister language Raku. It is implemented using a source filter, so its use is unofficially discouraged. [6]
Higher-Order Perl: Transforming Programs with Programs (ISBN 1-55860-701-3) is a book about the Perl programming language written by Mark Jason Dominus with the goal to teach Perl programmers with a strong C and Unix background how to use techniques with roots in functional programming languages like Lisp that are available in Perl as well. [1]