{"id":117,"date":"2020-04-12T04:52:00","date_gmt":"2020-04-12T04:52:00","guid":{"rendered":"http:\/\/www.goncalo.pt\/por\/?p=117"},"modified":"2025-03-24T16:34:36","modified_gmt":"2025-03-24T16:34:36","slug":"2020-04-12-knowledge-tester-com-video-com-calculadora-de-ipv4-em-c","status":"publish","type":"post","link":"https:\/\/www.goncalo.pt\/por\/2020\/04\/12\/2020-04-12-knowledge-tester-com-video-com-calculadora-de-ipv4-em-c\/","title":{"rendered":"2020-04-12 &#8211; Knowledge Tester com V\u00eddeo, com Calculadora de IPV4 em C++"},"content":{"rendered":"\n<p>Uma imagem que tinha partilhado em 12 de Abril. Nessa altura andava a desenvolve um sistema de menus f\u00e1cil de usar para a aplica\u00e7\u00e3o.<\/p>\n\n\n\n<p>Para quem quiser ver a evolu\u00e7\u00e3o at\u00e9 in\u00edcios de Junho, fica o v\u00eddeo:<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-rich is-provider-embed-handler wp-block-embed-embed-handler wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Knowledge Tester - VideoLog de Desenvolvimento 2 - Subnetting e Simulador IOS Cisco (SW de Forma\u00e7\u00e3o)\" width=\"800\" height=\"450\" src=\"https:\/\/www.youtube.com\/embed\/wGtvH8ZDTx0?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p>Descri\u00e7\u00e3o da partilha da altura, abaixo:<\/p>\n\n\n\n<p>\u00ab2020-04-12 &#8211; Hoje prepara\u00e7\u00e3o dos menus. O que v\u00eaem \u00e9 a cria\u00e7\u00e3o de uma rotina de convers\u00e3o de menus definidos em texto, para menus reais definidos pelo programa, para separar a l\u00f3gica da configura\u00e7\u00e3o. Assim, definimos por texto sem mexer no c\u00f3digo.<\/p>\n\n\n\n<p>Neste caso temos os menus hierarquizados de forma a poderem ser usados universalmente independentemente se estivermos a falar de Windows ou Linux, Linux GUI ou Terminal, etc. Podem ver que alguns sub-menus t\u00eam op\u00e7\u00f5es e outros sub-menus, etc, com recursividade infinita.<\/p>\n\n\n\n<p>Depois vem a segunda parte que n\u00e3o est\u00e1 vis\u00edvel aqui, que \u00e9 a convers\u00e3o destes dados hierarquizados que v\u00eaem para objectos (Object Oriented Programming), eu n\u00e3o uso OOP sempre, s\u00f3 quando \u00e9 necess\u00e1rio, ali\u00e1s C++ \u00e9 mesmo assim, usamos o que quisermos, e neste caso OOP d\u00e1 jeito, cada op\u00e7\u00e3o do menu ou sub-menu ser\u00e1 um objecto pr\u00f3prio.<\/p>\n\n\n\n<p>Essa parte far\u00e1 ainda parte da l\u00f3gica transversal do programa, e depois haver\u00e1 uma outra layer que \u00e9 a aplica\u00e7\u00e3o dessa configura\u00e7\u00e3o toda para o terminal, ou para a GUI, etc, essa parte j\u00e1 depende se estivermos a criar um menu numa GUI ou num terminal.<\/p>\n\n\n\n<p>Eu tinha c\u00f3digo reutiliz\u00e1vel antes que nem sei onde anda, estou agora a fazer tudo do zero em C++ vers\u00e3o 17, e em breve C++ 20 quando os compiladores o disponibilizarem, por exemplo em C++ 17 j\u00e1 posso usar nested inline namespaces, etc. Em C++20 poderei usar ainda mais coisas.<\/p>\n\n\n\n<p>Assim fico com c\u00f3digo reutiliz\u00e1vel e j\u00e1 tirando proveito dos mais recentes compiladores. <img loading=\"lazy\" decoding=\"async\" alt=\"?\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/t4c\/1\/16\/1f642.png\" width=\"16\" height=\"16\"><\/p>\n\n\n\n<p>Escusado ser\u00e1 dizer que o tempo que perco nesta aplica\u00e7\u00e3o ser\u00e1 menor na pr\u00f3xima, pois o c\u00f3digo que crio aqui ser\u00e1 usado depois nas outras, e assim a 2\u00aa aplica\u00e7\u00e3o levar\u00e1 menos tempo a criar, a 3\u00aa ainda menos, a 4\u00aa ainda menos, etc.<\/p>\n\n\n\n<p>Evito usar pointers para n\u00e3o complicar o c\u00f3digo e evitar ter poss\u00edveis crashes se algu\u00e9m alterar, \u00e9 para ser Open Source, mas n\u00e3o me preocupo demasiado se ir\u00e3o compreender o c\u00f3digo ou n\u00e3o. Fa\u00e7o um esfor\u00e7o para estar tudo documentado e compreens\u00edvel, evito ternary operators, pointers, etc, para ser o mais simples poss\u00edvel, mas n\u00e3o perderei a minha identidade, ser\u00e1 sempre algo feito por mim, e quem quiser entrar no barco depois ter\u00e1 de compreender, se quiser entrar. <img loading=\"lazy\" decoding=\"async\" alt=\"?\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/t51\/1\/16\/1f603.png\" width=\"16\" height=\"16\"><\/p>\n\n\n\n<p>Mais umas horitas de uma noite, de P\u00e1scoa neste caso. :P\u00bb<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Uma imagem que tinha partilhado em 12 de Abril. Nessa altura andava a desenvolve um sistema de menus f\u00e1cil de<\/p>\n","protected":false},"author":1,"featured_media":119,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[122,19,5,3,4],"tags":[7,34,207,20,9,312,341,33,17],"class_list":["post-117","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dev-videolog","category-networking","category-programacao","category-projectos","category-softwares","tag-c","tag-calculadora-de-ips","tag-dev","tag-ipv4","tag-knowledge-tester","tag-logs","tag-logs-de-desenvolvimento","tag-redes","tag-subnetting"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>2020-04-12 - Knowledge Tester com V\u00eddeo, com Calculadora de IPV4 em C++ - Gon\u00e7alo Ferreira<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.goncalo.pt\/por\/2020\/04\/12\/2020-04-12-knowledge-tester-com-video-com-calculadora-de-ipv4-em-c\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"2020-04-12 - Knowledge Tester com V\u00eddeo, com Calculadora de IPV4 em C++ - Gon\u00e7alo Ferreira\" \/>\n<meta property=\"og:description\" content=\"Uma imagem que tinha partilhado em 12 de Abril. 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