{"id":86435,"date":"2020-06-25T01:42:12","date_gmt":"2020-06-24T23:42:12","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/anonsirovan-perl-7"},"modified":"2020-06-25T01:42:12","modified_gmt":"2020-06-24T23:42:12","slug":"anonsirovan-perl-7","status":"publish","type":"post","link":"https:\/\/prohoster.info\/lv\/blog\/news\/anonsirovan-perl-7","title":{"rendered":"Pazi\u0146ots par Perl 7.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>\u0160odien notieko\u0161aj\u0101 virtu\u0101laj\u0101 Perl valodas izstr\u0101d\u0101t\u0101ju konferenc\u0113 <noindex><a rel=\"nofollow\" href=\"https:\/\/www.perl.com\/article\/announcing-perl-7\/\">tika pazi\u0146ots<\/a><\/noindex> par projektu Perl 7, kas pak\u0101peniski turpin\u0101s Perl 5 att\u012bst\u012bbu bez radik\u0101l\u0101m izmai\u0146\u0101m. Perl 7 b\u016bs l\u012bdz\u012bgs izn\u0101kumam <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=53207\">Perl 5.32.0<\/a><\/noindex>, iz\u0146emot citas noklus\u0113juma iestat\u012bjumu, kas lab\u0101k atbilst m\u016bsdienu izstr\u0101des praksei. P\u0101r\u0113j\u0101 zi\u0146\u0101 Perl 7 paliks tas pats Perl 5 un saglab\u0101s sader\u012bbu ar iepriek\u0161 izstr\u0101d\u0101taj\u0101m lietojumprogramm\u0101m.<\/p>\n<p>B\u016btiska versijas numura mai\u0146a kalpos k\u0101 p\u0101rre\u0123istrators p\u0101rejai uz jaunu funkcionalit\u0101tes palielin\u0101\u0161anas modeli valod\u0101 Perl bez j\u016btama atpaka\u013csader\u012bbas p\u0101rk\u0101puma.<br \/>\nTiek uzskat\u012bts, ka Perl 7 izveide pal\u012bdz\u0113s piesaist\u012bt jaunus izstr\u0101d\u0101t\u0101jus Perl valodas izmanto\u0161anai un nodro\u0161in\u0101t noz\u012bm\u012bgu jaunu iesp\u0113ju pievieno\u0161anu valodai, saglab\u0101jot sader\u012bbu ar eso\u0161o projektu kodu b\u0101zi. Numurs 7 izv\u0113l\u0113ts t\u0101d\u0113\u013c, ka Perl 6 tika izmantots valodas izstr\u0101d\u0113, kas tagad <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51679\">att\u012bst\u0101s<\/a><\/noindex> ir ar atsevi\u0161\u0137u nosaukumu Raku. Pirmais Perl 7 izlaidums tiek gaid\u012bts n\u0101kamgad. Perl 5.32 versija k\u013c\u016bs par p\u0113d\u0113jo Perl 5 s\u0113rij\u0101, un t\u0101s atbalsts pl\u0101nots no 5 l\u012bdz 10 gadiem.<\/p>\n<p>Visp\u0101r\u0113j\u0101 redzam\u0101 izmai\u0146a Perl 7 b\u016bs noklus\u0113juma re\u017e\u012bma iek\u013cau\u0161ana &#171;<noindex><a rel=\"nofollow\" href=\"https:\/\/perldoc.perl.org\/strict.html\">strict<\/a><\/noindex>&#171;, kas paredz stingru main\u012bgo deklar\u0101ciju, simbolisko r\u0101d\u012bt\u0101ju izmanto\u0161anu un apak\u0161programmu pie\u0161\u0137ir\u0161anu. &#171;use strict&#187; izmanto\u0161ana ir laba prakse, ko iev\u0113ro liel\u0101k\u0101 da\u013ca izstr\u0101d\u0101t\u0101ju. L\u012bdz\u012bgi pl\u0101no ieviest ar\u012b br\u012bdin\u0101jumu apstr\u0101di noklus\u0113jum\u0101 (&#171;<noindex><a rel=\"nofollow\" href=\"https:\/\/perldoc.perl.org\/warnings.html\">use warnings<\/a><\/noindex>&#171;).<\/p>\n<p> Perl 7 ar\u012b pl\u0101no stabiliz\u0113t un noklus\u0113jum\u0101 iek\u013caut da\u017eas jau eso\u0161\u0101s eksperiment\u0101l\u0101s iesp\u0113jas, piem\u0113ram,  <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=39865\">funkciju paraksti<\/a><\/noindex> (&#171;use feature &#8216;signatures'&#187;), kas \u013cauj defin\u0113t ieejas argumentus funkcijas defin\u0113\u0161an\u0101 un automatiz\u0113t to skaita p\u0101rbaudi (var\u0113s rakst\u012bt &#171;sub foo ($left, $right) {&#187; viet\u0101 &#171;sub foo { my($left, $right) = @_;&#187;). Pl\u0101nots ieviest ar\u012b &#171;isa&#187; operatora atbalstu, lai p\u0101rbaud\u012btu, vai objekts ir nor\u0101d\u012bt\u0101 klase vai no t\u0101s atvasin\u0101ta klase (&#171;if( $obj isa Package::Name )&#187;, k\u0101 ar\u012b p\u0113d\u0113j\u0101 izsaukuma oper\u0101cijas (postderef) &#171;$sref-&gt;$*&#187; viet\u0101 &#171;${ $sref }&#187;, &#171;$aref-&gt;@*&#187; viet\u0101 &#171;@{ $aref }&#187; un &#171;$href-&gt;%{ &#8230; }&#187; viet\u0101 &#171;%$href{ &#8230; }&#187;. <\/p>\n<p>Kandid\u0101ti izsl\u0113g\u0161anai noklus\u0113juma Perl 7 ir:<\/p>\n<ul>\n<li class=\"l\"> Indirekt\u0101 objektu izsaukumu not\u0101cija (&#171;<noindex><a rel=\"nofollow\" href=\"https:\/\/metacpan.org\/pod\/indirect\">nav funkcija qw(indirect)<\/a><\/noindex>&#171;)  &#8212; novecojusi objektu izsaukumu metode, kur\u0101, nevis &#171;-&gt;&#187;, tiek izmantots atstarpe (&#171;method $object @param&#187; viet\u0101 &#171;$object-&gt;$method(@param)&#187;). Piem\u0113ram, viet\u0101 &#171;my $cgi = new CGI&#187; vienm\u0113r j\u0101dara &#171;my $cgi = CGI-&gt;new&#187;.\n<li class=\"l\"> T\u012brie failu descriptori bez main\u012bgo deklar\u0101cij\u0101m (&#171;<noindex><a rel=\"nofollow\" href=\"https:\/\/metacpan.org\/pod\/bareword::filehandles\">nav neapstr\u0101d\u0101t\u0101 v\u0101rda::failu apraksts<\/a><\/noindex>&#171;) &#8212; izmantojot konstrukcijas, piem\u0113ram, &#171;open FH, $file&#187;, tas rad\u012bs k\u013c\u016bdu; j\u0101izmanto &#171;open my $fh, $file&#187;. \u0160\u012b izmai\u0146a neskar standarta failu descriptorus STDIN, STDOUT, STDERR, ARGV, ARGVOUT un DATA.\n<li class=\"l\"> Viltus daudzdimension\u0101li mas\u012bvi un hashes Perl 4 stil\u0101 (&#171;<noindex><a rel=\"nofollow\" href=\"https:\/\/metacpan.org\/pod\/multidimensional\">nav daudzdimensiju<\/a><\/noindex>&#171;).<br \/>\nPiem\u0113ram, nor\u0101dot &#171;$hash{1, 2}&#187;, rad\u012bs k\u013c\u016bdu; j\u0101izmanto starpmas\u012bvs, piem\u0113ram, &#171;$hash{join($;, 1, 2)}&#187;.<\/p>\n<li class=\"l\"> Prototipu deklar\u0101cija Perl 4 stil\u0101 (j\u0101izmanto &#171;use :prototype()&#187;).\n<\/ul>\n<p>V\u0113l\u0101kos pl\u0101nos par noklus\u0113jumu pl\u0101nots iek\u013caut Unicode atbalstu, kas atbr\u012bvos izstr\u0101d\u0101t\u0101jus no &#171;use utf8&#187; nor\u0101d\u012b\u0161anas kod\u0101. Modul\u0113s un skriptos, kurus satiks ar jaunaj\u0101m noklus\u0113juma iestat\u012bjumiem, tiks pied\u0101v\u0101ta iesp\u0113ja atgriezties pie Perl 5 uzved\u012bbas, pievienojot kod\u0101 rindi\u0146u &#171;use compat::perl5&#187;. Atsevi\u0161\u0137i iestat\u012bjumi ar\u012b tiks saglab\u0101ti un tos var\u0113s main\u012bt atsevi\u0161\u0137i.<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Avots: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=53226\">opennet.lv<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041d\u0430 \u043f\u0440\u043e\u0445\u043e\u0434\u044f\u0449\u0435\u0439 \u0441\u0435\u0433\u043e\u0434\u043d\u044f \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u044c\u043d\u043e\u0439 \u043a\u043e\u043d\u0444\u0435\u0440\u0435\u043d\u0446\u0438\u0438 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u043e\u0432 \u044f\u0437\u044b\u043a\u0430 Perl \u0430\u043d\u043e\u043d\u0441\u0438\u0440\u043e\u0432\u0430\u043d \u043f\u0440\u043e\u0435\u043a\u0442 Perl 7, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043f\u043b\u0430\u0432\u043d\u043e \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0438\u0442 \u0440\u0430\u0437\u0432\u0438\u0442\u0438\u0435 \u0432\u0435\u0442\u043a\u0438 Perl 5 \u0431\u0435\u0437 \u0432\u043d\u0435\u0441\u0435\u043d\u0438\u044f \u0440\u0430\u0434\u0438\u043a\u0430\u043b\u044c\u043d\u044b\u0445 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0439. Perl 7 \u0431\u0443\u0434\u0435\u0442 \u0430\u043d\u0430\u043b\u043e\u0433\u0438\u0447\u0435\u043d \u0432\u044b\u043f\u0443\u0441\u043a\u0443 Perl 5.32.0, \u0437\u0430 \u0438\u0441\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0435\u043c \u0438\u043d\u044b\u0445 \u043d\u0430\u0441\u0442\u0440\u043e\u0435\u043a \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e, \u043b\u0443\u0447\u0448\u0435 \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0445 \u0441\u043e\u0432\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u0439 \u043f\u0440\u0430\u043a\u0442\u0438\u043a\u0435 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438. \u0412 \u043e\u0441\u0442\u0430\u043b\u044c\u043d\u043e\u043c Perl 7 \u043e\u0441\u0442\u0430\u043d\u0435\u0442\u0441\u044f \u0442\u0435\u043c \u0436\u0435 Perl 5 \u0438 \u0441\u043e\u0445\u0440\u0430\u043d\u0438\u0442 \u0441\u043e\u0432\u043c\u0435\u0441\u0442\u0438\u043c\u043e\u0441\u0442\u044c \u0441 \u0440\u0430\u043d\u0435\u0435 [&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-86435","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041d\u0430 \u043f\u0440\u043e\u0445\u043e\u0434\u044f\u0449\u0435\u0439 \u0441\u0435\u0433\u043e\u0434\u043d\u044f \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u044c\u043d\u043e\u0439 \u043a\u043e\u043d\u0444\u0435\u0440\u0435\u043d\u0446\u0438\u0438 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u043e\u0432 \u044f\u0437\u044b\u043a\u0430 Perl \u0430\u043d\u043e\u043d\u0441\u0438\u0440\u043e\u0432\u0430\u043d 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