{"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\/da\/blog\/news\/vyshel-crystal-0-34-0","title":{"rendered":"Crystal 0.34.0 er udgivet","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Den nye version af Crystal, et compilert programmeringssprog med Ruby-syntaks, har hovedfunktioner som en runtime med en \"indbygget\" event loop, hvor alle input-output-operationer er asynkrone, st\u00f8tte til multitr\u00e5dning (for nuv\u00e6rende aktiveres det via en flag ved kompilering) og en yderst enkel og praktisk m\u00e5de at arbejde med C-biblioteker.<\/p>\n<p>Fra version 0.34.0 begynder sproget officielt at bev\u00e6ge sig med hurtigt skridt mod dets f\u00f8rste reelle udgave (dvs. version 1.0).<\/p>\n<p>I den nye version af Crystal kan f\u00f8lgende \u00e6ndringer og forbedringer bem\u00e6rkes i r\u00e6kkef\u00f8lge efter betydning:<\/p>\n<ul>\n<li>\n<p>En ny logging-bibliotek er tilf\u00f8jet til API'en <strong>Log<\/strong>, som adskiller sig fra den gamle ved at kunne sende meddelelser til forskellige backends og filtrere disse meddelelser forskelligt afh\u00e6ngigt af \"kilden\".<\/p>\n<\/li>\n<li>\n<p>Rester fra C-udviklingsverdenen, <strong>Errno<\/strong> og <strong>WinError<\/strong>, som blev brugt til primitive input-output-operationer, er ved at forsvinde takket v\u00e6re hierarkiet af undtagelser <strong>IO::Error<\/strong> (ingen bruger dog endnu Errno).<\/p>\n<\/li>\n<li>\n<p>Automatisk inds\u00e6ttelse af else nil er fjernet fra operatoren <strong>case\/when\/else<\/strong>. Dette er gjort for at udelukke tilf\u00e6ldige spring fra udviklerens side af en af \u200b\u200bgrenene <strong>block<\/strong> ved matching af determinerede tilf\u00e6lde s\u00e5som enums og gennemgang af typer fra en Union. Med andre ord, s\u00e5 vil denne type kode ikke l\u00e6ngere fungere uden at angive en ekstra <strong>block<\/strong> (when Char) eller oprettelse af en <strong>ellers<\/strong>-gren:<\/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>Kompilatorindstillingen <strong>disable_overflow<\/strong> er ikke l\u00e6ngere tilg\u00e6ngelig. Brug metoderne &amp;+, &amp;-, &amp;* til at udf\u00f8re operationer med overl\u00f8b.<\/p>\n<\/li>\n<li>\n<p><strong>Array#fill<\/strong> flyver nu hurtigere end en kugle, takket v\u00e6re udskiftningen af den dumme l\u00f8kke med en enkel memset;<\/p>\n<\/li>\n<li>\n<p>Shard-manageren, der kaldes, som det paradoksalt nok er, <strong>shards<\/strong>, bruger nu en hurtigere og mere effektiv algoritme til afh\u00e6ngighedsh\u00e5ndtering, Molinillo, som er inspireret af CocoaPods (Swift) og Builder (Ruby).<\/p>\n<\/li>\n<li>\n<p>Tilf\u00f8jet support for <strong>LLVM 10<\/strong>, som i teorien vil give os en vis stigning i ydeevne, stabilitet osv.<\/p>\n<\/li>\n<\/ul>\n<p>\u2026 og mange andre, som efter min subjektive vurdering er mindre v\u00e6sentlige forbedringer.<\/p>\n<p>Det skal bem\u00e6rkes, at Crystal er et sprog bygget p\u00e5 LLVM, som g\u00f8r det muligt at skrive applikationer hurtigere, enklere og mere kortfattet end med dets fortolkede \"f\u00e6tre\", samtidig med at der produceres en ret hurtig bin\u00e6rfil. I forhold til Golang skiller det sig ud ved at v\u00e6re et fuldt ud funktionelt OOP-sprog, underst\u00f8tte generics og have en meget enkel og forst\u00e5elig syntaks. Det er i mange henseender analogt med Nim, men er eksplicit rettet mod praktisk anvendelse \"her og nu\", hvilket giver det et API-arsenal af godt dokumenterede, nyttige og kvalitetsv\u00e6rkt\u00f8jer, der underst\u00f8ttes af sprogets udviklere og derfor er ganske stabile.<\/p>\n<p>Kilde: <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 5.0.3 - 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