{"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\/es\/blog\/news\/vyshel-crystal-0-34-0","title":{"rendered":"Se ha lanzado Crystal 0.34.0","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Se lanz\u00f3 una nueva versi\u00f3n de Crystal, un lenguaje de programaci\u00f3n compilado con una sintaxis similar a Ruby. Sus caracter\u00edsticas principales son un runtime con un bucle de eventos 'incorporado', en el que todas las operaciones de entrada y salida son as\u00edncronas, soporte para la concurrencia (actualmente habilitado con un flag al compilar) y una manera de trabajar con bibliotecas en C que es extremadamente simple y conveniente.<\/p>\n<p>A partir de la versi\u00f3n 0.34.0, el lenguaje comienza oficialmente a avanzar firme hacia su primer lanzamiento verdadero (es decir, la versi\u00f3n 1.0).<\/p>\n<p>En la nueva versi\u00f3n de Crystal se pueden destacar los siguientes cambios y mejoras por orden de importancia:<\/p>\n<ul>\n<li>\n<p>Se ha a\u00f1adido una nueva biblioteca de registro al API <strong>Log<\/strong>, que, a diferencia de la anterior, puede dirigir mensajes a diferentes backends y filtrar esos mensajes de manera diferente seg\u00fan el 'origen'.<\/p>\n<\/li>\n<li>\n<p>Los rudimentos del mundo del desarrollo en C, <strong>Errno<\/strong> y <strong>WinError<\/strong>, que se utilizaban para primitivas de entrada\/salida, pasan al pasado gracias a la jerarqu\u00eda de excepciones <strong>IO::Error<\/strong> (sin embargo, nadie proh\u00edbe usar Errno por ahora).<\/p>\n<\/li>\n<li>\n<p>Se ha eliminado la sustituci\u00f3n autom\u00e1tica de else nil del operador <strong>case\/when\/else<\/strong>. Esto se hizo para evitar que el desarrollador omitiera accidentalmente una de las ramas <strong>when<\/strong> al hacer coincidencias en casos deterministas, como enum y al recorrer tipos de Union. Es decir, en t\u00e9rminos m\u00e1s simples, este tipo de c\u00f3digo ya no funcionar\u00e1 sin especificar otro <strong>when<\/strong> (when Char) o asignar <strong>else<\/strong>-rama:<\/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>La opci\u00f3n del compilador <strong>disable_overflow<\/strong> ya no est\u00e1 disponible. Para operaciones con desbordamiento, utilice los m\u00e9todos &amp;+, &amp;-, &amp;*.<\/p>\n<\/li>\n<li>\n<p><strong>Array#fill<\/strong> ahora vuela m\u00e1s r\u00e1pido que una bala, gracias a la sustituci\u00f3n de un ciclo torpe por un simple memset;<\/p>\n<\/li>\n<li>\n<p>El gestor de shards (paquetes), que se llama, parad\u00f3jicamente, <strong>shards<\/strong>, ahora utiliza un algoritmo m\u00e1s r\u00e1pido y eficiente llamado Molinillo para la satisfacci\u00f3n de dependencias, que fue observado en CocoaPods (Swift) y Builder (Ruby).<\/p>\n<\/li>\n<li>\n<p>Se ha a\u00f1adido soporte para <strong>LLVM 10<\/strong>, lo que, en teor\u00eda, nos dar\u00e1 un incremento en rendimiento, estabilidad, etc.<\/p>\n<\/li>\n<\/ul>\n<p>\u2026 y muchas otras mejoras que, en mi opini\u00f3n subjetiva, son menos significativas.<\/p>\n<p>Me gustar\u00eda destacar que Crystal es un lenguaje construido sobre LLVM, que permite escribir aplicaciones a veces m\u00e1s r\u00e1pido, m\u00e1s f\u00e1cilmente y de forma m\u00e1s concisa que sus 'hermanos' interpretados, y al mismo tiempo genera un binario bastante \u00e1gil. A diferencia de Golang, destaca como un verdadero lenguaje orientado a objetos, con soporte para gen\u00e9ricos y una sintaxis muy simple y clara. Su prop\u00f3sito es en gran medida similar al de Nim, pero est\u00e1 claramente orientado hacia la aplicaci\u00f3n pr\u00e1ctica 'aqu\u00ed y ahora', lo que le permite tener en su arsenal de API una gran cantidad de herramientas \u00fatiles y de calidad, bien documentadas y mantenidas por los desarrolladores del lenguaje, lo que las hace bastante estables.<\/p>\n<p>Fuente: <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 5.0.2 - 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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