{"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\/it\/blog\/news\/vyshel-crystal-0-34-0","title":{"rendered":"\u00c8 uscito Crystal 0.34.0","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>\u00c8 stata rilasciata una nuova versione di Crystal, un linguaggio di programmazione compilato con sintassi simile a Ruby. Le principali caratteristiche includono un runtime con un loop di eventi \"integrato\", in cui tutte le operazioni di input\/output sono asincrone, supporto per la multithreading (attualmente attivabile con un flag in fase di compilazione) e un lavoro con le librerie C estremamente semplice e comodo.<\/p>\n<p>A partire dalla versione 0.34.0, il linguaggio inizia ufficialmente a muoversi a grandi passi verso il primo vero rilascio (cio\u00e8 la versione 1.0).<\/p>\n<p>Nella nuova versione di Crystal si possono notare i seguenti cambiamenti e miglioramenti in ordine di importanza:<\/p>\n<ul>\n<li>\n<p>\u00c8 stata aggiunta una nuova libreria di logging all'API <strong>Log<\/strong>, che, a differenza della vecchia versione, \u00e8 in grado di indirizzare i messaggi verso diversi backend e di filtrare questi messaggi in modi diversi a seconda del \"sorgente\".<\/p>\n<\/li>\n<li>\n<p>I rudimenti del mondo dello sviluppo in C, <strong>Errno<\/strong> e <strong>WinError<\/strong>, usati per i primitivi di input-output, stanno diventando un ricordo grazie alla gerarchia delle eccezioni <strong>IO::Error<\/strong> (tuttavia, finora nessuno ha vietato l'uso di Errno).<\/p>\n<\/li>\n<li>\n<p>\u00c8 stata rimossa l'aggiunta automatica di else nil dall'operatore <strong>case\/when\/else<\/strong>. Questo \u00e8 stato fatto per escludere il salto accidentale da parte dello sviluppatore di uno dei rami <strong>when<\/strong> nella corrispondenza per casi deterministici come Enum e nell'attraversamento dei tipi da un'unione. In altre parole, il seguente codice non funzioner\u00e0 pi\u00f9 senza specificare un ulteriore <strong>when<\/strong> (when Char) o assegnare <strong>else<\/strong>-ramo:<\/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>L'opzione del compilatore <strong>disable_overflow<\/strong> non \u00e8 pi\u00f9 disponibile. Per operazioni di overflow, utilizzare i metodi &amp;+, &amp;-, &amp;*.<\/p>\n<\/li>\n<li>\n<p><strong>Array#fill<\/strong> ora vola pi\u00f9 veloce di un proiettile, grazie alla sostituzione di un ciclo poco efficiente con un semplice memset;<\/p>\n<\/li>\n<li>\n<p>Il manager dei pacchetti, chiamato, paradossalmente, <strong>shards<\/strong>, ora utilizza un algoritmo di soddisfacimento delle dipendenze pi\u00f9 veloce ed efficiente, Molinillo, preso in prestito da CocoaPods (Swift) e Builder (Ruby).<\/p>\n<\/li>\n<li>\n<p>\u00c8 stata aggiunta la supporto per <strong>LLVM 10<\/strong>, il che dovrebbe darci un certo aumento delle prestazioni, stabilit\u00e0, ecc.<\/p>\n<\/li>\n<\/ul>\n<p>\u2026 e un insieme di altre, a mio avviso soggettivo, migliorie meno significative.<\/p>\n<p>Vorrei sottolineare che Crystal \u00e8 un linguaggio basato su LLVM che permette di scrivere applicazioni talvolta pi\u00f9 velocemente, pi\u00f9 semplicemente e in modo pi\u00f9 conciso rispetto ai suoi \"fratelli\" interpretati, ottenendo al contempo un binario piuttosto rapido. Rispetto a Golang, si distingue per un supporto completo della programmazione orientata agli oggetti, supporto per generici e una sintassi molto semplice e chiara. Per molteplici aspetti \u00e8 analogo a Nim, ma \u00e8 chiaramente orientato a un'applicazione pratica \"qui e ora\", motivo per cui offre nella sua API un ampio arsenale di strumenti di qualit\u00e0 ben documentati, supportati dagli sviluppatori del linguaggio e quindi molto stabili.<\/p>\n<p>Fonte: <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 5.0.1.1 - 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 \u043e\u0441\u043e\u0431\u0435\u043d\u043d\u043e\u0441\u0442\u0438 \u043a\u043e\u0442\u043e\u0440\u043e\u0433\u043e \u2014 \u0440\u0430\u043d\u0442\u0430\u0439\u043c \u0441 \u00ab\u0432\u043c\u043e\u043d\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u043c\u00bb event loop\u2019\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.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/prohoster.info\/it\/blog\/news\/vyshel-crystal-0-34-0\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.1.1\" \/>\n\t\t<meta property=\"og:locale\" content=\"it_IT\" \/>\n\t\t<meta property=\"og:site_name\" content=\"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"\ud83e\udd47\u0412\u044b\u0448\u0435\u043b Crystal 0.34.0 | ProHoster\" \/>\n\t\t<meta property=\"og: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 \u043e\u0441\u043e\u0431\u0435\u043d\u043d\u043e\u0441\u0442\u0438 \u043a\u043e\u0442\u043e\u0440\u043e\u0433\u043e \u2014 \u0440\u0430\u043d\u0442\u0430\u0439\u043c \u0441 \u00ab\u0432\u043c\u043e\u043d\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u043c\u00bb event loop\u2019\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.\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/prohoster.info\/it\/blog\/news\/vyshel-crystal-0-34-0\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg\" \/>\n\t\t<meta property=\"og:image:width\" content=\"350\" \/>\n\t\t<meta property=\"og:image:height\" content=\"350\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2020-04-07T23:43:13+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2020-04-07T23:43:13+00:00\" \/>\n\t\t<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/prohoster\" \/>\n\t\t<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/prohoster\" \/>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"\ud83e\udd47\u00c8 uscita Crystal 0.34.0 | ProHoster","description":"\u00c8 stata rilasciata una nuova versione di Crystal, un linguaggio di programmazione compilato con sintassi Ruby, le cui principali caratteristiche includono un runtime con un event loop \"integrato\", in cui tutte le operazioni di input-output sono asincrone, supporto.","canonical_url":"https:\/\/prohoster.info\/it\/blog\/news\/vyshel-crystal-0-34-0","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"it_IT","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u0412\u044b\u0448\u0435\u043b Crystal 0.34.0 | ProHoster","og:description":"\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 \u2014 \u0440\u0430\u043d\u0442\u0430\u0439\u043c \u0441 \u00ab\u0432\u043c\u043e\u043d\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u043c\u00bb event loop\u2019\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.","og:url":"https:\/\/prohoster.info\/it\/blog\/news\/vyshel-crystal-0-34-0","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2020-04-07T23:43:13+00:00","article:modified_time":"2020-04-07T23:43:13+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"77153","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":null,"schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"seo_analyzer_scan_date":null,"breadcrumb_settings":null,"limit_modified_date":false,"reviewed_by":null,"ai":null,"created":"2021-02-28 12:34:50","updated":"2022-10-02 17:23:22","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/posts\/77153","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/comments?post=77153"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/posts\/77153\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/media?parent=77153"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/categories?post=77153"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/tags?post=77153"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}