{"id":87170,"date":"2020-07-04T19:42:14","date_gmt":"2020-07-04T17:42:14","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/analiz-riskov-pri-voploshhenii-v-zhizn-inicziativy-perl-7"},"modified":"2020-07-04T19:42:14","modified_gmt":"2020-07-04T17:42:14","slug":"analiz-riskov-pri-voploshhenii-v-zhizn-inicziativy-perl-7","status":"publish","type":"post","link":"https:\/\/prohoster.info\/en\/blog\/news\/analiz-riskov-pri-voploshhenii-v-zhizn-inicziativy-perl-7","title":{"rendered":"Risk analysis in implementing the Perl 7 initiative","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Dan Book (<noindex><a rel=\"nofollow\" href=\"https:\/\/metacpan.org\/author\/DBOOK\">Dan Book<\/a><\/noindex>), supporting over 70 modules in CPAN, <noindex><a rel=\"nofollow\" href=\"http:\/\/blogs.perl.org\/users\/grinnz\/2020\/07\/perl-7-a-risk-benefit-analysis.html\">conducted an analysis<\/a><\/noindex> of the risks associated with the proposed <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=53226\">Perl 7 implementation plan.<\/a><\/noindex>It should be noted that the Perl 7 branch intends to include strict mode by default, activate 'use warnings', and change the values of several parameters affecting compatibility with older code.<\/p>\n<p>This change is expected to render a large number of CPAN modules non-functional in Perl 7, requiring modifications to each such module, which is unrealistic to achieve within the planned year, especially since not all authors remain available. New features in Perl 7 will also prevent the use of modules designed to support versions prior to the latest version of Perl.<\/p>\n<p>Additionally, the following possible issues are mentioned:<\/p>\n<ul>\n<li class=\"l\"> Confusion for newcomers due to some examples and recommendations in guides written for Perl 5 being non-functional in Perl 7.\n<li class=\"l\"> The impact on the development of one-liners has not been explored. Perl is actively used not only for writing large scripts but also for creating one-liners and short scripts for administrative needs, where the use of strict mode is unnecessary.\n<li class=\"l\"> Distributions face the problem of simultaneously providing executable files to run both Perl 7 and Perl 5 scripts (a repeat of the history with Python 2 and 3 is expected).\n<li class=\"l\"> Code written for Perl 7 need not specifically indicate that it will not work in Perl 5, as many developers are unlikely to specify the minimum supported version.\n<li class=\"l\"> Various utilities and modules relying on Perl 5 will require fixes.\n<li class=\"l\"> The preparation of Perl 7 will temporarily freeze the development of new features for Perl due to the reallocation of resources.\n<li class=\"l\"> There is a risk of burnout and the departure of active developers of the Perl interpreter, modules, tools, and accompanying packages due to the emergence of a large additional workload without proper motivation (not everyone agrees on the necessity of creating Perl 7).\n<li class=\"l\"> The culture within the community and the attitude towards the stability of Perl will fundamentally change.\n<li class=\"l\"> The credibility of the language will be undermined due to criticism regarding the compatibility of Perl 7 with existing code in the absence of anything fundamentally new.\n<\/ul>\n<p>To mitigate the negative consequences, Dan Book proposed his plan, which will prevent a break in compatibility. It is suggested to maintain the previous development process and assign version number 7.0.0 to the next release instead of 5.34.0, which will disable support for indirect object notation and include some new features such as try\/catch. Changes like 'use strict' and 'use warnings' are proposed to be controlled by explicitly specifying the Perl version in the code through the pragma 'use v7' (strict is already included by default for 'use v5.12' and later releases). <\/p>\n<p>By default, it is recommended to keep the set of parameters in the interpreter unchanged from Perl 5, except for the standard process of cleaning up deprecated syntax used previously. Support for old features and deprecated syntax can still be terminated in accordance with existing rules for transitioning functionality to deprecated status. A pragma 'use v7' is suggested to signal the use of new Perl 7 elements in the code and to differentiate between the new and old styles.<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Source: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=53284\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0414\u044d\u043d \u0411\u0443\u043a (Dan Book), \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u044e\u0449\u0438\u0439 \u0431\u043e\u043b\u0435\u0435 70 \u043c\u043e\u0434\u0443\u043b\u0435\u0439 \u0432 CPAN, \u043f\u0440\u043e\u0432\u0451\u043b \u0430\u043d\u0430\u043b\u0438\u0437 \u0440\u0438\u0441\u043a\u043e\u0432 \u043f\u0440\u0438 \u0432\u043e\u043f\u043b\u043e\u0449\u0435\u043d\u0438\u0438 \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u043d\u043e\u0433\u043e \u043f\u043b\u0430\u043d\u0430 \u0432\u043d\u0435\u0434\u0440\u0435\u043d\u0438\u044f Perl 7. \u041d\u0430\u043f\u043e\u043c\u043d\u0438\u043c, \u0447\u0442\u043e \u0432 \u0432\u0435\u0442\u043a\u0435 Perl 7 \u043d\u0430\u043c\u0435\u0440\u0435\u0432\u0430\u044e\u0442\u0441\u044f \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u044c \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e \u0440\u0435\u0436\u0438\u043c \u0441\u0442\u0440\u043e\u0433\u043e\u0439 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 &#171;strict&#187;, \u0430\u043a\u0442\u0438\u0432\u0438\u0440\u043e\u0432\u0430\u0442\u044c &#171;use warnings&#187; \u0438 \u0438\u0437\u043c\u0435\u043d\u0438\u0442\u044c \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435 \u0440\u044f\u0434\u0430 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u043e\u0432, \u0432\u043b\u0438\u044f\u044e\u0449\u0438\u0445 \u043d\u0430 \u0441\u043e\u0432\u043c\u0435\u0441\u0442\u0438\u043c\u043e\u0441\u0442\u044c \u0441\u043e \u0441\u0442\u0430\u0440\u044b\u043c \u043a\u043e\u0434\u043e\u043c. \u041e\u0436\u0438\u0434\u0430\u0435\u0442\u0441\u044f, \u0447\u0442\u043e \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0435 \u043f\u0440\u0438\u0432\u0435\u0434\u0451\u0442 \u043a \u043d\u0435\u0440\u0430\u0431\u043e\u0442\u043e\u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u0438 \u0432 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-87170","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0414\u044d\u043d \u0411\u0443\u043a (Dan Book), \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u044e\u0449\u0438\u0439 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