{"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\/et\/blog\/news\/analiz-riskov-pri-voploshhenii-v-zhizn-inicziativy-perl-7","title":{"rendered":"Riskianal\u00fc\u00fcs Perl 7 algatuse elluviimisel","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>), kes toetab rohkem kui 70 moodulit CPAN-is, <noindex><a rel=\"nofollow\" href=\"http:\/\/blogs.perl.org\/users\/grinnz\/2020\/07\/perl-7-a-risk-benefit-analysis.html\">tegi anal\u00fc\u00fcsi<\/a><\/noindex> riskidest ettepaneku <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=53226\">Perl 7 rakendamise plaani<\/a><\/noindex>. Meenutame, et Perl 7 haru kavatseb vaikimisi sisse l\u00fclitada range kontrolli re\u017eiimi &#171;strict&#187;, aktiveerida &#171;use warnings&#187; ja muuta mitme parameetri v\u00e4\u00e4rtust, mis m\u00f5jutavad \u00fchilduvust vana koodiga.<\/p>\n<p>Oodatakse, et muudatus toob kaasa suure arvu moodulite mittefunktsioneerimise Perl 7-s CPAN-is ja vajab muudatusi igas sellises moodulis, mis on ebat\u00f5en\u00e4oline aasta jooksul, eriti arvestades, et mitte k\u00f5ik autorid ei ole kergesti k\u00e4ttesaadavad. Perl 7 uued funktsioonid ei luba ka kasutada mooduleid, mis toetavad mitte ainult k\u00f5ige v\u00e4rskemat Perl versiooni.<\/p>\n<p>Lisaks mainitakse j\u00e4rgmisi v\u00f5imalikke probleeme:<\/p>\n<ul>\n<li class=\"l\"> Algajate segadus, kuna Perl 7-s ei toimi m\u00f5ned n\u00e4ited ja soovitused, mis on kirjutatud Perl 5 jaoks.\n<li class=\"l\"> M\u00f5ju \u00fches\u00e4learvutite arendusele on uurimata. Perl-i kasutatakse aktiivselt mitte ainult suurte skriptide kirjutamiseks, vaid ka \u00fche rea skriptide ja l\u00fchikeste stsenaariumide loomisel administraatorite vajadusteks, kus rangete re\u017eiimi kasutamine on liialdatud.\n<li class=\"l\"> Distro-l on probleem Perl 7 ja Perl 5 skriptide k\u00e4ivitamiseks vajalike t\u00e4itmisfailide samaaegse pakkumisega (oodatakse, et ajalugu kordub Python 2 ja 3 puhul).\n<li class=\"l\"> Perl 7 kirjutatud kood ei pea erilist t\u00e4helepanu juhtima, et see ei saa t\u00f6\u00f6tada Perl 5-s, paljud arendajad ei osuta minimaalset toetatud versiooni.\n<li class=\"l\"> Erinevad Perl 5-le tuginevad utiliidid ja moodulid vajavad parandusi.\n<li class=\"l\"> Perl 7 areng, kuna ressursside \u00fcmberjaotamine, k\u00fclmutab uute v\u00f5imaluste arendamise m\u00f5neks ajaks.\n<li class=\"l\"> On risk aktiivsete Perl-i t\u00f5lgendaja, moodulite, t\u00f6\u00f6riistade ja toetavate pakettide arendajate v\u00e4simuse ja lahkumise suhtes, kuna lisandub suur t\u00e4iendav koormus ilma piisava motivatsioonita (k\u00f5ik ei n\u00f5ustu Perl 7 loomise vajalikkusega).\n<li class=\"l\"> Kultuur kogukonnas muutub fundamentaalselt ja suhtumine Perl-i stabiilsusesse.\n<li class=\"l\"> Keel n\u00e4gu autoriteed kahjustakse p\u00e4rast kriitikat Perl 7 \u00fchilduvuse rikkumise \u00fcle olemasoleva koodiga, kui pole midagi p\u00f5him\u00f5tteliselt uut.\n<\/ul>\n<p>Negatiivsete tagaj\u00e4rgede leevendamiseks pakkus Dan Book v\u00e4lja oma plaani, mis v\u00f5imaldab v\u00e4ltida \u00fchilduvuse katkemist. Eesm\u00e4rk on s\u00e4ilitada varasem arendusprotsess ja m\u00e4\u00e4rata j\u00e4rgmisele v\u00e4ljalaskmisele numbri 7.0.0, milles keelatakse objekti kutsete kaudne s\u00fcntaks ja lisatakse m\u00f5ned uued v\u00f5imalused, nagu try\/catch. Muudatused, nagu &#171;use strict&#187; ja &#171;use warnings&#187;, reguleeritakse Perl versiooni selge m\u00e4\u00e4ratlemise kaudu koodis pragma &#171;use v7&#187; abil (strict l\u00fclitatakse juba vaikimisi sisse &#171;use v5.12&#187; ja uuemates v\u00e4ljalasketes). <\/p>\n<p>Vaikimisi soovitatakse interpreteris s\u00e4ilitada parameetrite komplekt, mis ei erine Perl 5-st, v\u00e4lja arvatud vananenud s\u00fcntaksi puhastamise tavaline protsess, mida on juba varem rakendatud. Vanade v\u00f5imaluste ja vananenud s\u00fcntaksi toetust saab nagu varem l\u00f5petada vastavalt olemasolevatele reeglitele funktsionaalsuse deklareerimiseks vananenud. Uute Perl 7 elementide kasutamisest koodis ja uue ning vana stiili eristamiseks pakutakse pragma &#171;use v7&#187; kasutamist.<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Allikas: <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 5.0.1.1 - 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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