{"id":77153,"date":"2020-04-08T01:43:13","date_gmt":"2020-04-07T23:43:13","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vyshel-crystal-0-34-0"},"modified":"2020-04-08T01:43:13","modified_gmt":"2020-04-07T23:43:13","slug":"vyshel-crystal-0-34-0","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sl\/blog\/news\/vyshel-crystal-0-34-0","title":{"rendered":"Izdana je Crystal 0.34.0","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Iz\u0161la je nova razli\u010dica Crystal, programskega jezika s sintakso Ruby, katerih glavne zna\u010dilnosti so runtime z 'vgrajenim' event loopom, kjer so vsi vnosi in izhodi asinhroni, podpora za ve\u010dnitnost (zaenkrat samo s flagom pri kompilaciji) ter izjemno preprosto in uporabniku prijazno delo s knji\u017enicami v C.<\/p>\n<p>Od razli\u010dice 0.34.0 se je jezik uradno za\u010del z odlo\u010dnim korakom pomikati proti prvemu pravemu sprostitvi (tj. razli\u010dici 1.0).<\/p>\n<p>V novi razli\u010dici Crystal lahko opazimo naslednje spremembe in izbolj\u0161ave v vrstnem redu njihove pomembnosti:<\/p>\n<ul>\n<li>\n<p>V API je dodana nova knji\u017enica za dnevnik <strong>Log<\/strong>, ki, v nasprotju s prej\u0161njo razli\u010dico, zna usmerjati sporo\u010dila v razli\u010dne backend-e in ta sporo\u010dila filtrirati na razli\u010dne na\u010dine, odvisno od 'vira'.<\/p>\n<\/li>\n<li>\n<p>Rudimenti iz sveta C-programiranja, <strong>Errno<\/strong> in <strong>WinError<\/strong>, ki so se uporabljali za primitivne operacije vhod\/izhod, odhajajo v preteklost zahvaljujo\u010d hierarhiji izjem <strong>IO::Error<\/strong> (vendar pa nih\u010de zaenkrat ne prepoveduje uporabe Errno).<\/p>\n<\/li>\n<li>\n<p>Samodejna vstavitev else nil iz operatorja <strong>case\/when\/else<\/strong>. To je bilo storjeno, da bi se izognili naklju\u010dnemu preskakovanju ene od vej s strani razvijalca <strong>when<\/strong> pri ujemanju po deterministi\u010dnih primerih, kot so enumi in prehodih po tipih iz Uniona. Torej, preprosto re\u010deno, tak\u0161en kodeks ne bo ve\u010d deloval brez navedbe \u0161e enega <strong>when<\/strong> (when Char) ali dolo\u010danja <strong>else<\/strong>-veje:<\/p>\n<\/li>\n<\/ul>\n<p>a = 1 || 'x' || \"foo\"<br \/>\ncase a<br \/>\nwhen Int32<br \/>\n  # &#8230;<br \/>\nwhen String<br \/>\n  # &#8230;<br \/>\nend<\/p>\n<ul>\n<li>\n<p>Mo\u017enost prevajalnika <strong>disable_overflow<\/strong> ni ve\u010d na voljo. Za operacije s prelivanjem uporabite metode &amp;+, &amp;-, &amp;*.<\/p>\n<\/li>\n<li>\n<p><strong>Array#fill<\/strong> zdaj leti hitreje od krogle, zahvaljujo\u010d zamenjavi neintuitivnega cikla z enim preprostim memsetom;<\/p>\n<\/li>\n<li>\n<p>Menjalnik shardov (paketov), ki se imenuje, kot to paradoksalno je, <strong>shards<\/strong>, zdaj uporablja hitrej\u0161i in u\u010dinkovitej\u0161i algoritem za zadovoljitev odvisnosti Molinillo, opazovan v CocoaPods (Swift) in Builder (Ruby).<\/p>\n<\/li>\n<li>\n<p>Dodana je podpora za <strong>LLVM 10<\/strong>, kar naj bi nam po ideji prineslo pove\u010danje zmogljivosti, stabilnosti, itd.<\/p>\n<\/li>\n<\/ul>\n<p>\u2026 in mnoga druga, po mojem subjektivnem mnenju, manj pomembna izbolj\u0161anja.<\/p>\n<p>Rad bi poudaril, da je Crystal jezik, zgrajen na LLVM, ki omogo\u010da pisanje aplikacij v\u010dasih hitreje, enostavneje in pregledneje kot pri njegovih interpretiranih 'bratih', pri \u010demer pa dobimo razmeroma hiter izvr\u0161ni program. V primerjavi z Golang izstopa kot popolnoma funkcionalen OOP, podpira generi\u010dne tipe in ima zelo preprosto in razumljivo sintakso. Po svojem namenu je v veliki meri podoben Nimu, vendar je jasno usmerjen na prakti\u010dno uporabo 'tukaj in zdaj', kar omogo\u010da, da ima v svojem API arzenalu \u0161tevilna dobro dokumentirana, priro\u010dna in kakovostna orodja, ki jih podpirajo razvijalci jezika in zato so zelo stabilna.<\/p>\n<p>Izvor: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"http:\/\/www.linux.org.ru\/news\/development\/15627605\">linux.org.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412\u044b\u0448\u043b\u0430 \u043d\u043e\u0432\u0430\u044f \u0432\u0435\u0440\u0441\u0438\u044f Crystal, \u043a\u043e\u043c\u043f\u0438\u043b\u0438\u0440\u0443\u0435\u043c\u043e\u0433\u043e \u044f\u0437\u044b\u043a\u0430 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0441 \u0441\u0438\u043d\u0442\u0430\u043a\u0441\u0438\u0441\u043e\u043c Ruby, \u0433\u043b\u0430\u0432\u043d\u044b\u0435 \u043e\u0441\u043e\u0431\u0435\u043d\u043d\u043e\u0441\u0442\u0438 \u043a\u043e\u0442\u043e\u0440\u043e\u0433\u043e &mdash; \u0440\u0430\u043d\u0442\u0430\u0439\u043c \u0441 &laquo;\u0432\u043c\u043e\u043d\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u043c&raquo; event loop&rsquo;\u043e\u043c, \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u043c \u0432\u0441\u0435 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438 \u0432\u0432\u043e\u0434\u0430-\u0432\u044b\u0432\u043e\u0434\u0430 \u0430\u0441\u0438\u043d\u0445\u0440\u043e\u043d\u043d\u044b, \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 \u043c\u043d\u043e\u0433\u043e\u043f\u043e\u0442\u043e\u0447\u043d\u043e\u0441\u0442\u0438 (\u043f\u043e\u043a\u0430 \u0432\u043a\u043b\u044e\u0447\u0430\u0435\u0442\u0441\u044f \u0444\u043b\u0430\u0433\u043e\u043c \u043f\u0440\u0438 \u043a\u043e\u043c\u043f\u0438\u043b\u044f\u0446\u0438\u0438) \u0438 \u0438\u0441\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e \u043f\u0440\u043e\u0441\u0442\u0430\u044f \u0438 \u0443\u0434\u043e\u0431\u043d\u0430\u044f \u0440\u0430\u0431\u043e\u0442\u0430 \u0441 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0430\u043c\u0438 \u043d\u0430 \u0421\u0438. \u041d\u0430\u0447\u0438\u043d\u0430\u044f \u0441 \u0432\u0435\u0440\u0441\u0438\u0438 0.34.0, \u044f\u0437\u044b\u043a \u043e\u0444\u0438\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043d\u0430\u0447\u0438\u043d\u0430\u0435\u0442 \u0442\u0432\u0451\u0440\u0434\u043e\u0439 \u043f\u043e\u0441\u0442\u0443\u043f\u044c\u044e \u0434\u0432\u0438\u0433\u0430\u0442\u044c\u0441\u044f \u0432 \u0441\u0442\u043e\u0440\u043e\u043d\u0443 \u043f\u0435\u0440\u0432\u043e\u0433\u043e [&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-77153","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.5 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0412\u044b\u0448\u043b\u0430 \u043d\u043e\u0432\u0430\u044f \u0432\u0435\u0440\u0441\u0438\u044f Crystal, \u043a\u043e\u043c\u043f\u0438\u043b\u0438\u0440\u0443\u0435\u043c\u043e\u0433\u043e \u044f\u0437\u044b\u043a\u0430 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0441 \u0441\u0438\u043d\u0442\u0430\u043a\u0441\u0438\u0441\u043e\u043c Ruby, \u0433\u043b\u0430\u0432\u043d\u044b\u0435 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