{"id":102211,"date":"2021-11-04T15:37:01","date_gmt":"2021-11-04T13:37:01","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/otkryt-kod-luau-varianta-yazyka-lua-s-proverkoj-tipov"},"modified":"2021-11-04T15:37:01","modified_gmt":"2021-11-04T13:37:01","slug":"otkryt-kod-luau-varianta-yazyka-lua-s-proverkoj-tipov","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/novosti-interneta\/otkryt-kod-luau-varianta-yazyka-lua-s-proverkoj-tipov","title":{"rendered":"Il codice di Luau, un variante del linguaggio Lua con controllo dei tipi, \u00e8 stato reso pubblico.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>\u00c8 stata anunciata l'apertura del codice sorgente e la pubblicazione del primo rilascio separato del linguaggio di programmazione Luau, che continua lo sviluppo del linguaggio Lua ed \u00e8 retrocompatibile con Lua 5.1. Il linguaggio Luau \u00e8 principalmente destinato all'integrazione di gestori di script nelle applicazioni ed \u00e8 progettato per raggiungere elevate prestazioni e un basso consumo di risorse. Il codice del progetto \u00e8 scritto in C++ ed \u00e8 open source con licenza MIT.    <\/p>\n<p>Luau estende Lua con funzionalit\u00e0 di verifica dei tipi e alcune nuove costruzioni sintattiche, come i letterali di stringa. Il linguaggio \u00e8 retrocompatibile con Lua 5.1 e parzialmente con versioni pi\u00f9 recenti. Supporta l'API Lua Runtime, consentendo di utilizzare Luau con codice e binding esistenti. Il runtime del linguaggio si basa su un codice fortemente revisionato di Lua runtime 5.1, ma l'interprete \u00e8 stato completamente riscritto. Durante lo sviluppo sono state adottate alcune nuove tecniche di ottimizzazione, che hanno permesso di ottenere prestazioni superiori rispetto a Lua.      <\/p>\n<p>Il progetto \u00e8 stato sviluppato da Roblox e viene utilizzato nel codice della piattaforma di gioco, nei giochi e nelle applicazioni utente dell'azienda, inclusa l'editor Roblox Studio. Inizialmente, Luau \u00e8 stato sviluppato a porte chiuse, ma alla fine si \u00e8 deciso di renderlo open source per un ulteriore sviluppo collaborativo con il coinvolgimento della comunit\u00e0.    <\/p>\n<p>Caratteristiche principali:  <\/p>\n<ul>\n<li class=\"l\">  \u041f\u043e\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u044c\u043d\u0430\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u0430 \u0442\u0438\u043f\u043e\u0432 (Gradual typing), \u0437\u0430\u043d\u0438\u043c\u0430\u044e\u0449\u0430\u044f \u043f\u0440\u043e\u043c\u0435\u0436\u0443\u0442\u043e\u0447\u043d\u043e\u0435 \u043f\u043e\u043b\u043e\u0436\u0435\u043d\u0438\u0435 \u043c\u0435\u0436\u0434\u0443 \u0434\u0438\u043d\u0430\u043c\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u0438 \u0441\u0442\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u0442\u0438\u043f\u0438\u0437\u0430\u0446\u0438\u0435\u0439. Luau \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u0441\u0442\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u0443\u044e \u0442\u0438\u043f\u0438\u0437\u0430\u0446\u0438\u044e \u043f\u043e \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u043e\u0441\u0442\u0438,  \u0443\u043a\u0430\u0437\u044b\u0432\u0430\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044e \u043e \u0442\u0438\u043f\u0430\u0445 \u0447\u0435\u0440\u0435\u0437 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u044b\u0435 \u0430\u043d\u043d\u043e\u0442\u0430\u0446\u0438\u0438.  \u041f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0442\u0441\u044f \u0432\u0441\u0442\u0440\u043e\u0435\u043d\u043d\u044b\u0435 \u0442\u0438\u043f\u044b &#171;any&#187;, &#171;nil&#187;, &#171;boolean&#187;, &#171;number&#187;, &#171;string&#187; \u0438 &#171;thread&#187;. \u041f\u0440\u0438 \u044d\u0442\u043e\u043c \u0441\u043e\u0445\u0440\u0430\u043d\u0435\u043d\u0430 \u0438 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u0434\u0438\u043d\u0430\u043c\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u0442\u0438\u043f\u0438\u0437\u0430\u0446\u0438\u0438 \u0431\u0435\u0437 \u044f\u0432\u043d\u043e\u0433\u043e \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u044f \u0442\u0438\u043f\u0430 \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u044b\u0445 \u0438 \u0444\u0443\u043d\u043a\u0446\u0438\u0439.         function foo(x: number, y: string): boolean         local k: string = y:rep(x)         return k == &#171;a&#187;     end\n<li class=\"l\"> \u041f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 \u0441\u0442\u0440\u043e\u043a\u043e\u0432\u044b\u0445 \u043b\u0438\u0442\u0435\u0440\u0430\u043b\u043e\u0432 (\u043a\u0430\u043a \u0432 Lua 5.3), \u0442\u0430\u043a\u0438\u0445 \u043a\u0430\u043a &#171;&#92;0x**&#187; (\u0448\u0435\u0441\u0442\u043d\u0430\u0434\u0446\u0430\u0442\u0435\u0440\u0438\u0447\u043d\u043e\u0435 \u0447\u0438\u0441\u043b\u043e), &#171;&#92;u{**}&#187; (Unicode-\u0441\u0438\u043c\u0432\u043e\u043b) \u0438 &#171;&#92;z&#187; (\u043a\u043e\u043d\u0435\u0446 \u0441\u0442\u0440\u043e\u043a\u0438), \u0430 \u0442\u0430\u043a\u0436\u0435 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u043d\u0430\u0433\u043b\u044f\u0434\u043d\u043e\u0433\u043e \u043e\u0444\u043e\u0440\u043c\u043b\u0435\u043d\u0438\u044f \u0447\u0438\u0441\u0435\u043b (\u043c\u043e\u0436\u043d\u043e \u043f\u0438\u0441\u0430\u0442\u044c 1_000_000 \u0432\u043c\u0435\u0441\u0442\u043e 1000000), \u043b\u0438\u0442\u0435\u0440\u0430\u043b\u044b \u0434\u043b\u044f  \u0448\u0435\u0441\u0442\u043d\u0430\u0434\u0446\u0430\u0442\u0435\u0440\u0438\u0447\u043d\u044b\u0445 (0x&#8230;) \u0438 \u0434\u0432\u043e\u0438\u0447\u043d\u044b\u0445 \u0447\u0438\u0441\u0435\u043b (0b&#8230;&#8230;.).\n<li class=\"l\"> \u041f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u044f &#171;continue&#187;, \u0434\u043e\u043f\u043e\u043b\u043d\u044f\u044e\u0449\u0435\u0435 \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u0443\u044e\u0449\u0435\u0435 \u043a\u043b\u044e\u0447\u0435\u0432\u043e\u0435 \u0441\u043b\u043e\u0432\u043e &#171;break&#187;, \u0434\u043b\u044f \u043f\u0435\u0440\u0435\u0445\u043e\u0434\u0430 \u043a \u043d\u043e\u0432\u043e\u0439 \u0438\u0442\u0435\u0440\u0430\u0446\u0438\u0438 \u0446\u0438\u043a\u043b\u0430.\n<li class=\"l\"> Supporto per operatori di assegnazione compositi (+=, -=, *=, \/=, %=, ^=, ..=).\n<li class=\"l\"> \u041f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u0443\u0441\u043b\u043e\u0432\u043d\u044b\u0445 \u0431\u043b\u043e\u043a\u043e\u0432&#187;if-then-else&#187; \u0432 \u0444\u043e\u0440\u043c\u0435 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u0439, \u0432\u043e\u0437\u0432\u0440\u0430\u0449\u0430\u0435\u043c\u044b\u0445 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435, \u0432\u044b\u0447\u0438\u0441\u043b\u0435\u043d\u043d\u043e\u0435 \u0432\u043e \u0432\u0440\u0435\u043c\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0431\u043b\u043e\u043a\u0430. \u0414\u043e\u043f\u0443\u0441\u043a\u0430\u0435\u0442\u0441\u044f \u0443\u043a\u0430\u0437\u0430\u043d\u0438\u0435 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u043b\u044c\u043d\u043e\u0433\u043e \u0447\u0438\u0441\u043b\u0430 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u0439  elseif \u0432 \u0431\u043b\u043e\u043a\u0435.       local maxValue = if a > b then a else b     local sign = if x < 0 then -1 elseif x > 0 then 1 else 0\n<li class=\"l\"> Presenza di una modalit\u00e0 di isolamento (sandbox) che consente l'esecuzione di codice non affidabile. Questa funzionalit\u00e0 pu\u00f2 essere utilizzata per organizzare l'esecuzione affiancata di codice proprio e di codice scritto da altri sviluppatori, ad esempio, librerie di terze parti la cui sicurezza non pu\u00f2 essere garantita.\n<li class=\"l\"> \u041e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u0438\u0435 \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043d\u043e\u0439 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 \u0438\u0437 \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u0443\u0434\u0430\u043b\u0435\u043d\u044b \u0444\u0443\u043d\u043a\u0446\u0438\u0438, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043f\u043e\u0442\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043c\u043e\u0433\u0443\u0442 \u0441\u043e\u0437\u0434\u0430\u0432\u0430\u0442\u044c \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u044b \u0441 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u044c\u044e. \u041d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u0438\u0437 \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043d\u043e\u0433\u043e \u043d\u0430\u0431\u043e\u0440\u0430 \u0438\u0441\u043a\u043b\u044e\u0447\u0435\u043d\u044b \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 &#171;io&#187; (\u0434\u043e\u0441\u0442\u0443\u043f \u043a \u0444\u0430\u0439\u043b\u0430\u043c \u0438 \u0437\u0430\u043f\u0443\u0441\u043a \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0432), &#171;package&#187; (\u0434\u043e\u0441\u0442\u0443\u043f \u043a \u0444\u0430\u0439\u043b\u0430\u043c \u0438 \u0437\u0430\u0433\u0440\u0443\u0437\u043a\u0430 \u043c\u043e\u0434\u0443\u043b\u0435\u0439), &#171;os&#187; (\u0443\u0434\u0430\u043b\u0435\u043d\u044b \u0444\u0443\u043d\u043a\u0446\u0438\u0438 \u0434\u043e\u0441\u0442\u0443\u043f\u0430 \u043a \u0444\u0430\u0439\u043b\u0430\u043c \u0438 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u044b\u0445 \u043e\u043a\u0440\u0443\u0436\u0435\u043d\u0438\u044f), &#171;debug&#187; (\u043d\u0435\u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u0430\u044f \u0440\u0430\u0431\u043e\u0442\u0430 \u0441 \u043f\u0430\u043c\u044f\u0442\u044c\u044e),  &#171;dofile&#187; \u0438 &#171;loadfile&#187; (\u0434\u043e\u0441\u0442\u0443\u043f \u043a \u0424\u0421).\n<li class=\"l\"> Fornitura di strumenti per l'analisi statica del codice, rilevamento errori (linter) e verifica della corretta utilizzazione dei tipi.\n<li class=\"l\"> Parser, interprete di bytecode e compilatore ad alte prestazioni. Luau attualmente non supporta la compilazione JIT, ma si sostiene che l'interprete Luau in alcune situazioni sia comparabile in termini di prestazioni a LuaJIT.            <\/ul>\n<p>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=56098\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041e\u0431\u044a\u044f\u0432\u043b\u0435\u043d\u043e \u043e\u0431 \u043e\u0442\u043a\u0440\u044b\u0442\u0438\u0438 \u0438\u0441\u0445\u043e\u0434\u043d\u044b\u0445 \u0442\u0435\u043a\u0441\u0442\u043e\u0432 \u0438 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438 \u043f\u0435\u0440\u0432\u043e\u0433\u043e \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u043e\u0433\u043e \u0432\u044b\u043f\u0443\u0441\u043a\u0430 \u044f\u0437\u044b\u043a\u0430 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f Luau, \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0430\u044e\u0449\u0435\u0433\u043e \u0440\u0430\u0437\u0432\u0438\u0442\u0438\u0435 \u044f\u0437\u044b\u043a\u0430 Lua \u0438 \u043e\u0431\u0440\u0430\u0442\u043d\u043e \u0441\u043e\u0432\u043c\u0435\u0441\u0442\u0438\u043c\u043e\u0433\u043e \u0441 Lua 5.1. \u042f\u0437\u044b\u043a Luau \u043f\u0440\u0435\u0434\u043d\u0430\u0437\u043d\u0430\u0447\u0435\u043d \u0432 \u043e\u0441\u043d\u043e\u0432\u043d\u043e\u043c \u0434\u043b\u044f \u0432\u0441\u0442\u0440\u0430\u0438\u0432\u0430\u043d\u0438\u044f \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u043e\u0432 \u0441\u0446\u0435\u043d\u0430\u0440\u0438\u0435\u0432 \u0432 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f \u0438 \u043d\u0430\u0446\u0435\u043b\u0435\u043d \u043d\u0430 \u0434\u043e\u0441\u0442\u0438\u0436\u0435\u043d\u0438\u0435 \u0432\u044b\u0441\u043e\u043a\u043e\u0439 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438 \u0438 \u043d\u0438\u0437\u043a\u043e\u0433\u043e \u043f\u043e\u0442\u0440\u0435\u0431\u043b\u0435\u043d\u0438\u044f \u0440\u0435\u0441\u0443\u0440\u0441\u043e\u0432. \u041a\u043e\u0434 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 \u043d\u0430\u043f\u0438\u0441\u0430\u043d \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 C++ \u0438 \u043e\u0442\u043a\u0440\u044b\u0442 \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 MIT. [&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-102211","post","type-post","status-publish","format-standard","hentry","category-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041e\u0431\u044a\u044f\u0432\u043b\u0435\u043d\u043e \u043e\u0431 \u043e\u0442\u043a\u0440\u044b\u0442\u0438\u0438 \u0438\u0441\u0445\u043e\u0434\u043d\u044b\u0445 \u0442\u0435\u043a\u0441\u0442\u043e\u0432 \u0438 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438 \u043f\u0435\u0440\u0432\u043e\u0433\u043e \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u043e\u0433\u043e \u0432\u044b\u043f\u0443\u0441\u043a\u0430 \u044f\u0437\u044b\u043a\u0430 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