The new \N regex escape works like the inversion of \n, matching any character that is not a newline, and (unlike the ‘.’ meta-character) is not affected by the “single line” regexp modifies /s. The word “experimental” signifies that this feature may be changed significantly, or even be removed completely, in a future release of Perl. This feature facilitates the development of domain specific languages (DSLs) within Perl by allowing a completely non-Perl sub-language to be parsed inline, with the correct ops cleanly generated. The syntax following the keyword is defined entirely by the extension. The experimental keyword plugin mechanism allows extensions to cleanly hook into the Perl parser to define new kinds of keyword-headed expressions and compound statements. It is now possible to overload how objects are turned into regular expressions when they appear on the right hand side of the =~ operator, or when they are interpolated into a regexp. This has been updated within the internal functions of 32-bit Perl 5.12. It is especially important for financial services organizations that use Perl for applications such as mortgage and insurance contracts that run for 30 years or longer. With previous versions of Perl for 32-bit Unix systems, it could only represent dates up to the year 2038, after which it wraps around back to 1970. The built-in date and time function now all work correctly past the year 2038 even when Perl is compiled with only 32-bit support. This will turn on Unicode semantics for all case changing operations on strings, regardless of how they are currently encoded internally. The “feature” pragma now supports the new “unicode_strings” feature: The implementation has been improved to provide access to every Unicode character property, including the loose matching rules for property names, and definition of all Unicode-defined synonyms for property names and values. Perl now supports all Unicode properties for developers doing globalization work in multiple languages. If ($condition) Īn explicit request to require Perl 5.12 or later will automatically turn on “use strict”: The so called “yada yada” operator of Perl 6 heritage is a shortcut to mark unimplemented code: This makes the code more concise, and also makes it easier for other tools to extract the version number out of the source. ![]() It allows you to set the module version right in the “package” statement at compile time, without having to assign to $VERSION at run-time. Several notable updates in ActivePerl 5.12 include: The Perl community proactively continues to contribute to the popular programming language, helping it maintain its status as a leading dynamic language option for enterprise developers. Based on Perl 5.12, this release contains a long list of smaller new features, bug fixes and some deprecations. Yesterday, we released our blog post Perl 5 is Alive, tracing the history of Perl 5 development and commenting on the continued commitment from the Perl community to Perl development.Ī day after the release of Perl 5.12 by the Perl Foundation, ActiveState released ActivePerl 5.12.
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