{"id":25315,"date":"2015-03-03T13:00:12","date_gmt":"2015-03-03T13:00:12","guid":{"rendered":"http:\/\/osmeusapontamentos.com\/?p=25315"},"modified":"2015-03-03T13:00:12","modified_gmt":"2015-03-03T13:00:12","slug":"dados-ou-objetos","status":"publish","type":"post","link":"https:\/\/osmeusapontamentos.com\/index.php\/2015\/03\/03\/dados-ou-objetos\/","title":{"rendered":"Dados ou Objetos"},"content":{"rendered":"<p>Um post interessante do stackoverflow que me indicaram refere a quest\u00e3o de fun\u00e7\u00f5es ou apis devolverem\u00a0<a href=\"http:\/\/stackoverflow.com\/questions\/6710967\/why-return-object-instead-of-array\">objetos ou arrays<\/a><\/p>\n<p>A principal\u00a0rea\u00e7\u00e3o foi de estranheza&#8230; um objeto \u00e9 uma coisa t\u00e3o diferente de um array&#8230; um array,\u00a0mesmo considerando um array associativo em php, n\u00e3o \u00e9 muito mais do que um par de valores com n posi\u00e7\u00f5es&#8230; um objeto\u00a0pode ter uma propriedade que \u00e9 um array&#8230; pode ser uma cole\u00e7\u00e3o de outros objetos e, principalmente, pode ter comportamentos implementados dentro de si, ou seja n\u00e3o s\u00e3o s\u00f3 dados&#8230;<\/p>\n<blockquote><p><a href=\"http:\/\/en.wikipedia.org\/wiki\/Object_(computer_science)\">&#8220;An object has state (data) and behavior (code)&#8221;<\/a><\/p><\/blockquote>\n<p>&#8230;de outra forma mais valia usar o equivalente aos <a href=\"http:\/\/www.tutorialspoint.com\/cprogramming\/c_structures.htm\">structs de C<\/a>.<\/p>\n<p>Outra quest\u00e3o tem a ver com o facto de estarmos a considerar o cen\u00e1rio de resultado de fun\u00e7\u00f5es e neste caso fun\u00e7\u00f5es\u00a0de uma api web.<\/p>\n<p>Considerando que hoje em dia na maior parte das vezes j\u00e1 n\u00e3o estamos a pensar\u00a0em Remoting ou RMI, como pensavamos h\u00e1 uns dez anos, como por exemplo &#8220;<a href=\"https:\/\/msdn.microsoft.com\/en-us\/library\/ms973864.aspx\">objects living in different AppDomains, in different processes, and in different machines<\/a>&#8221; ou &#8220;<a href=\"http:\/\/docs.oracle.com\/javase\/jndi\/tutorial\/objects\/storing\/remote.html\">mechanism that enables an object on one Java virtual machine to invoke methods on an object in another Java virtual machine<\/a>&#8221; mas sim\u00a0peda\u00e7os de JSON que s\u00e3o trocados via web ent\u00e3o basicamente confirmamos que s\u00e3o s\u00f3 dados que andam de um lado para o outro&#8230;<\/p>\n<p>Ou seja, pensando melhor nesta quest\u00e3o o que estamos a falar \u00e9 se devemos usar arrays ou <a href=\"http:\/\/en.wikipedia.org\/wiki\/Data_transfer_object\">DTO (Data Transfer Objects)<\/a> que s\u00e3o objetos cujo prop\u00f3sito \u00e9 precisamente servir de encapsulamento de dados para transfer\u00eancia entre sistemas. E neste caso podemos pensar que\u00a0a API que est\u00e1 a fornecer os dados \u00e9 um sistema e aquilo que vai utilizar os dados \u00e9 outro sistema.<\/p>\n<p>Assim sendo, e se\u00a0a nivel de performance estivermos a falar de custos negligenci\u00e1veis,\u00a0parece-me que a escolha ser\u00e1 feita somente pela\u00a0legibilidade que a linguagem seleccionada proporcionar ao c\u00f3digo desenvolvido.<\/p>\n<p><a href=\"http:\/\/stackoverflow.com\/a\/28831005\/1842864\">Vers\u00e3o em EN no stackoverflow<\/a>.<\/p>\n<p>(imagem retirada de \u00a0http:\/\/objectorientedcoldfusion.org\/procedural-vs-object-oriented.html)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Uma API deve devolver um array ou um objeto<\/p>\n","protected":false},"author":1,"featured_media":25322,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[508,613],"class_list":["post-25315","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-worklife","tag-php","tag-stackoverflow"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - 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