{"id":104162,"date":"2022-05-26T21:37:04","date_gmt":"2022-05-26T19:37:04","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/perl-7-plavno-prodolzhit-razvitie-perl-5-bez-narusheniya-obratnoj-sovmestiosti"},"modified":"2022-05-26T21:37:04","modified_gmt":"2022-05-26T19:37:04","slug":"perl-7-plavno-prodolzhit-razvitie-perl-5-bez-narusheniya-obratnoj-sovmestiosti","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/novosti-interneta\/perl-7-plavno-prodolzhit-razvitie-perl-5-bez-narusheniya-obratnoj-sovmestiosti","title":{"rendered":"Perl 7 do t\u00eb vazhdoj\u00eb zhvillimin e Perl 5 pa prishur kompatibilitetin e prapsh\u00ebm","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"
K\u00ebshilli drejtues i projektit Perl p\u00ebrmbledh planet p\u00ebr zhvillimin e m\u00ebtejsh\u00ebm t\u00eb deg\u00ebs Perl 5 dhe krijimin e deg\u00ebs Perl 7. Gjat\u00eb diskutimeve, k\u00ebshilli ra dakord se nuk \u00ebsht\u00eb e pranueshme t\u00eb shkelet kompaktibiliteti me kodin e shkruar tashm\u00eb p\u00ebr Perl 5, p\u00ebrve\u00e7 rasteve kur shkelja e kompaktibilitetit \u00ebsht\u00eb e nevojshme p\u00ebr t\u00eb eliminimin e dob\u00ebsive. K\u00ebshilli gjithashtu arriti n\u00eb p\u00ebrfundimin se gjuha duhet t\u00eb zhvillohet dhe duhet t\u00eb promovohen m\u00eb intensively mund\u00ebsit\u00eb e reja, duke e b\u00ebr\u00eb m\u00eb t\u00eb leht\u00eb aksesin n\u00eb risit\u00eb e reja dhe duke stimuluar implementimin e tyre. <\/p>\n
Ndryshe nga q\u00ebllimet fillestare, t\u00eb cilat parashikonin p\u00ebrfshirjen si parazgjedhje t\u00eb ndryshimeve q\u00eb shkelin kompaktibilitetin n\u00eb deg\u00ebn Perl 7, plani i ri parashikon nj\u00eb kalim progresiv t\u00eb deg\u00ebs Perl 5 n\u00eb Perl 7 pa shkelur kompaktibilitetin me kodin ekzistues. L\u00ebshimi i Perl 7.0 konceptualisht nuk do t\u00eb ndryshoj\u00eb nga dega tjet\u00ebr e Perl 5.xx. <\/p>\n
Zhvillimi i versioneve t\u00eb reja t\u00eb Perl 5 do t\u00eb vazhdoj\u00eb n\u00eb form\u00ebn e m\u00ebparshme \u2014 funksionalitetet e reja t\u00eb shtuar n\u00eb deg\u00eb, q\u00eb jan\u00eb t\u00eb papajtueshme me kodin e vjet\u00ebr, do t\u00eb p\u00ebrfshihen vet\u00ebm me nj\u00eb tregim t\u00eb qart\u00eb n\u00eb kodin pragmatik \u2018use version\u2019 ose \u2018use feature functionality\u2019. P\u00ebr shembull, n\u00eb versionin Perl 5.010 u paraqit nj\u00eb fjal\u00ebky\u00e7 i ri \u2018say\u2019, por pasi n\u00eb kodin ekzistues mund t\u00eb ishin p\u00ebrdorur funksione me emrin \u2018say\u2019, mb\u00ebshtetje p\u00ebr fjal\u00ebky\u00e7in e ri u aktivizua vet\u00ebm me nj\u00eb tregim t\u00eb qart\u00eb t\u00eb pragm\u00ebs \u2018use feature 'say'. <\/p>\n
Sintaksa e re e shtuar n\u00eb gjuh\u00eb, e cila n\u00eb p\u00ebrpunimin e versioneve t\u00eb m\u00ebparshme sillte nj\u00eb gabim, b\u00ebhet menj\u00ebher\u00eb e disponueshme pa nevoj\u00ebn p\u00ebr tregime speciale pragmatike. P\u00ebr shembull, n\u00eb Perl 5.36 do t\u00eb shfaqet nj\u00eb sintaks\u00eb e thjesht\u00ebzuar p\u00ebr p\u00ebrpunimin nj\u00ebkoh\u00ebsisht t\u00eb disa vlerave t\u00eb list\u00ebs (\u2018foreach my ($key, $value) (%hash) {\u2019), e cila do t\u00eb jet\u00eb e disponueshme menj\u00ebher\u00eb, edhe n\u00eb kod pa pragm\u00ebn \u2018use v5.36\u2019. <\/p>\n
N\u00eb form\u00ebn aktuale n\u00eb Perl 5.36, kur p\u00ebrdoret pragmatika \u2018use v5.36\u2019 aktivizohen 13 mund\u00ebsi q\u00eb shkelin pajtueshm\u00ebrin\u00eb (\u2018say\u2019, \u2018state\u2019, \u2018current_sub\u2019, \u2018fc\u2019, \u2018lexical_subs\u2019, \u2018signatures\u2019, \u2018isa\u2019, \u2018bareword_filehandles\u2019, \u2018bitwise\u2019, \u2018evalbytes\u2019, \u2018postderef_qq\u2019, \u2018unicode_eval\u2019 dhe \u2018unicode_strings\u2019), aktivizohen si parazgjedhje modalitetet \u2018use strict\u2019 dhe \u2018use warnings\u2019 dhe b\u00ebhet e pamundur mb\u00ebshtetja p\u00ebr noterizimin e vjet\u00ebr t\u00eb thirrjeve t\u00eb objekteve (kur n\u00eb vend t\u00eb \u2018->\u2019 p\u00ebrdoret nj\u00eb hap\u00ebsir\u00eb) dhe p\u00ebr arrays dhe hashes multidimensionale n\u00eb stilin Perl 4 (\u2018$hash{1, 2}\u2019). <\/p>\n
Kur ndryshimet t\u00eb mblidhen n\u00eb sasi t\u00eb mjaftueshme, n\u00eb vend t\u00eb nj\u00eb versioni t\u00eb ri Perl 5.x do t\u00eb formohet nj\u00eb versioni Perl 7.0, i cili do t\u00eb p\u00ebrfaq\u00ebsoj\u00eb nj\u00eb prerje t\u00eb gjendjes, por do t\u00eb mbetet plot\u00ebsisht i pajtuesh\u00ebm me Perl 5. P\u00ebrfshirja e ndryshimeve dhe konfigurimeve q\u00eb shkelin pajtueshm\u00ebrin\u00eb do t\u00eb k\u00ebrkoj\u00eb nj\u00eb shtes\u00eb t\u00eb qart\u00eb n\u00eb kod t\u00eb pragm\u00ebs \u2018use v7\u2019. Pra, kodi me pragm\u00ebn \u2018use v7\u2019 mund t\u00eb interpretohet si \u2018Perl modern\u2019, n\u00eb t\u00eb cilin jan\u00eb t\u00eb disponueshme ndryshimet q\u00eb shkelin pajtueshm\u00ebrin\u00eb, dhe pa \u2014 \u2018Perl konservativ\u2019, i cili do t\u00eb mbetet plot\u00ebsisht i pajtuesh\u00ebm me versionet e m\u00ebparshme. \n Burimi: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"