{"id":907,"date":"2020-05-25T11:49:08","date_gmt":"2020-05-25T14:49:08","guid":{"rendered":"https:\/\/micheladrianomedeiros.com.br\/blog\/?p=907"},"modified":"2020-05-25T11:49:10","modified_gmt":"2020-05-25T14:49:10","slug":"padroes-de-implementacao-3","status":"publish","type":"post","link":"https:\/\/micheladrianomedeiros.com.br\/blog\/padroes-de-implementacao-3\/","title":{"rendered":"Padr\u00f5es de Implementa\u00e7\u00e3o #3"},"content":{"rendered":"\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_83 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/micheladrianomedeiros.com.br\/blog\/padroes-de-implementacao-3\/#Expressao_Declarativa\" >Express\u00e3o Declarativa<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/micheladrianomedeiros.com.br\/blog\/padroes-de-implementacao-3\/#Ritmo_de_Mudanca\" >Ritmo de Mudan\u00e7a<\/a><\/li><\/ul><\/nav><\/div>\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Expressao_Declarativa\"><\/span><strong>Express\u00e3o Declarativa<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>Outro princ\u00edpio por tr\u00e1s dos padr\u00f5es de implementa\u00e7\u00e3o \u00e9 expressar declarativamente o m\u00e1ximo poss\u00edvel da inten\u00e7\u00e3o. Uma programa\u00e7\u00e3o imperativa \u00e9 poderosa e flex\u00edvel, mas t\u00ea-la exige que se siga o fluxo de execu\u00e7\u00e3o.<\/p>\n\n\n\n<p>Deve-se construir mentalmente um modelo do estado do programa e dos fluxos de controle de dados. Para partes de um programa que mais parecem fato simples, sem sequ\u00eancia ou condicionais, \u00e9 mais f\u00e1cil ler um c\u00f3digo simplesmente declarativo.<\/p>\n\n\n\n<p>Por exemplo, em vers\u00f5es mais antigas de JUnit, classes podiam ter um m\u00e9todo est\u00e1tico suite() que retornava um conjunto de testes para execu\u00e7\u00e3o.<\/p>\n\n\n\n<p>public static junit.framework.Test suite(){<\/p>\n\n\n\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Test result = new TestSuite();<\/p>\n\n\n\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \u2026c\u00f3digos\u2026<\/p>\n\n\n\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return result;<\/p>\n\n\n\n<p>}<\/p>\n\n\n\n<p>Agora vem a quest\u00e3o mais comum \u2013 que testes ser\u00e3o executados? Na maioria dos casos, o m\u00e9todo suite() apenas agrega os testes em diversas classes. Entretanto, como o m\u00e9todo&nbsp; suite() \u00e9 gen\u00e9rico, para se ter certeza, \u00e9 preciso ler e entender o m\u00e9todo.<\/p>\n\n\n\n<p>O JUnit 4, por sua vez, usa o princ\u00edpio de express\u00e3o declarativa para resolver o mesmo problema. Em vez de um m\u00e9todo rodar um suite de testes, h\u00e1 um executor especial de testes que os roda em um conjunto de classes (o caso comum):<\/p>\n\n\n\n<p>@RunWith(Suite.class)<\/p>\n\n\n\n<p>@TestClasses({<\/p>\n\n\n\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; SimpleTest.class,<\/p>\n\n\n\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ComplicatedTest.class<\/p>\n\n\n\n<p>})<\/p>\n\n\n\n<p>Class AllTest{}<\/p>\n\n\n\n<p>Sabe-se que testes est\u00e3o sendo agregados usando esse m\u00e9todo; basta olhar a anota\u00e7\u00e3o TestClasses para descobrir quais testes ser\u00e3o executados. Como a express\u00e3o da su\u00edte \u00e9 declarativa, n\u00e3o \u00e9 preciso suspeitar que haja exce\u00e7\u00f5es trai\u00e7oeiras.<\/p>\n\n\n\n<p>Essa solu\u00e7\u00e3o propicia a for\u00e7a e a generalidade do m\u00e9todo original suite(), mas o estilo declarativo torna o c\u00f3digo mais f\u00e1cil de ler. (A anota\u00e7\u00e3o RunWith fornece ainda mais flexibilidade para testes que o m\u00e9todo suite().<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Ritmo_de_Mudanca\"><\/span><strong>Ritmo de Mudan\u00e7a<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>Um \u00faltimo princ\u00edpio \u00e9 unir l\u00f3gica e dados que mudam em um mesmo ritmo e separar l\u00f3gica e dados que mudam em ritmos diferentes \u2013 esses ritmos s\u00e3o uma esp\u00e9cie de simetria temporal.<\/p>\n\n\n\n<p>\u00c0s vezes o princ\u00edpio ritmo de mudan\u00e7a aplica-se \u00e0s mudan\u00e7as que um programador faz. Por exemplo, ao escrever um software de impostos, separara-se o c\u00f3digo que faz c\u00e1lculos gerais de taxas do c\u00f3digo que \u00e9 espec\u00edfico de um ano.<\/p>\n\n\n\n<p>O c\u00f3digo muda em ritmos diferentes. Quando s\u00e3o feitas mudan\u00e7as para os anos seguintes, \u00e9 interessante ter a certeza de que o c\u00f3digo de anos anteriores ainda funciona. Separ\u00e1-los d\u00e1 mais seguran\u00e7a quanto \u00e0s consequ\u00eancias locais de mudan\u00e7as.<\/p>\n\n\n\n<p>O ritmo de mudan\u00e7a aplica-se a dados. Todos os campos em um objeto deveriam mudar mais ou menos no mesmo ritmo. Por exemplo, campos que s\u00e3o modificados apenas durante a ativa\u00e7\u00e3o de um \u00fanico m\u00e9todo devem ser vari\u00e1veis locais.<\/p>\n\n\n\n<p>Dois campos que mudam juntos, mas fora de sincronia com seus campos vizinhos, provavelmente pertencem a um objeto auxiliar. Se, em um instrumento financeiro, valor e moeda podem ser alterados juntos, ent\u00e3o esses dois campos provavelmente estariam melhor expressos com um objeto auxiliar Money:<\/p>\n\n\n\n<p>setAmount(int value, String currency){<\/p>\n\n\n\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; this.value = value;<\/p>\n\n\n\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; this.currency = currency;<\/p>\n\n\n\n<p>}<\/p>\n\n\n\n<p>que se torna:<\/p>\n\n\n\n<p>setAmount(int value, String currency){<\/p>\n\n\n\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; this.value = new Money(value, currency);<\/p>\n\n\n\n<p>}<\/p>\n\n\n\n<p>e depois:<\/p>\n\n\n\n<p>setAmount(Money value){<\/p>\n\n\n\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; this.value \u2013 value;<\/p>\n\n\n\n<p>}<\/p>\n\n\n\n<p>O princ\u00edpio de ritmo de mudan\u00e7a \u00e9 uma aplica\u00e7\u00e3o de simetria, mas simetria temporal. No exemplo acima, os campos originais value e currency s\u00e3o sim\u00e9tricos, pois mudam ao mesmo tempo.<\/p>\n\n\n\n<p>Contudo, s\u00e3o n\u00e3o sim\u00e9tricos aos outros campos do objeto. Expressar simetria colocando-os em seu pr\u00f3prio objeto demostra a rela\u00e7\u00e3o entre eles para os leitores, e provavelmente, gera novas oportunidade de, mais tarde, reduzir a duplica\u00e7\u00e3o e, ainda, localizar as consequ\u00eancias.<\/p>\n\n\n\n<p>Fonte: Padr\u00f5es de Implementa\u00e7\u00e3o: Um Cat\u00e1logo de Padr\u00f5es Indispens\u00e1vel para o Dia a Dia do Programador\u00a0(Portugu\u00eas)\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Express\u00e3o Declarativa Outro princ\u00edpio por tr\u00e1s dos padr\u00f5es de implementa\u00e7\u00e3o \u00e9 expressar declarativamente o m\u00e1ximo poss\u00edvel da inten\u00e7\u00e3o. Uma programa\u00e7\u00e3o imperativa \u00e9 poderosa e flex\u00edvel, mas t\u00ea-la exige que se siga o fluxo de execu\u00e7\u00e3o. Deve-se construir mentalmente um modelo do estado do programa e dos fluxos de controle de dados. Para partes de um [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":354,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18],"tags":[],"class_list":["post-907","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-designpatterns"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.5 (Yoast SEO v27.6) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Padr\u00f5es de Implementa\u00e7\u00e3o #3 - Viciados em Aprender<\/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:\/\/micheladrianomedeiros.com.br\/blog\/padroes-de-implementacao-3\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Padr\u00f5es de Implementa\u00e7\u00e3o #3\" \/>\n<meta property=\"og:description\" content=\"Express\u00e3o Declarativa Outro princ\u00edpio por tr\u00e1s dos padr\u00f5es de implementa\u00e7\u00e3o \u00e9 expressar declarativamente o m\u00e1ximo poss\u00edvel da inten\u00e7\u00e3o. Uma programa\u00e7\u00e3o imperativa \u00e9 poderosa e flex\u00edvel, mas t\u00ea-la exige que se siga o fluxo de execu\u00e7\u00e3o. Deve-se construir mentalmente um modelo do estado do programa e dos fluxos de controle de dados. Para partes de um [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/micheladrianomedeiros.com.br\/blog\/padroes-de-implementacao-3\/\" \/>\n<meta property=\"og:site_name\" content=\"Viciados em Aprender\" \/>\n<meta property=\"article:published_time\" content=\"2020-05-25T14:49:08+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2020-05-25T14:49:10+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2019\/08\/41quZ0OgNxL._SX348_BO1204203200_.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"350\" \/>\n\t<meta property=\"og:image:height\" content=\"499\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"blackzig\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"blackzig\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tempo estimado de leitura\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/micheladrianomedeiros.com.br\\\/blog\\\/padroes-de-implementacao-3\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/micheladrianomedeiros.com.br\\\/blog\\\/padroes-de-implementacao-3\\\/\"},\"author\":{\"name\":\"blackzig\",\"@id\":\"https:\\\/\\\/micheladrianomedeiros.com.br\\\/blog\\\/#\\\/schema\\\/person\\\/687a6d17428a0f0e040aefbd858ebc1e\"},\"headline\":\"Padr\u00f5es de Implementa\u00e7\u00e3o #3\",\"datePublished\":\"2020-05-25T14:49:08+00:00\",\"dateModified\":\"2020-05-25T14:49:10+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/micheladrianomedeiros.com.br\\\/blog\\\/padroes-de-implementacao-3\\\/\"},\"wordCount\":774,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/micheladrianomedeiros.com.br\\\/blog\\\/#\\\/schema\\\/person\\\/687a6d17428a0f0e040aefbd858ebc1e\"},\"image\":{\"@id\":\"https:\\\/\\\/micheladrianomedeiros.com.br\\\/blog\\\/padroes-de-implementacao-3\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/micheladrianomedeiros.com.br\\\/blog\\\/wp-content\\\/uploads\\\/2019\\\/08\\\/41quZ0OgNxL._SX348_BO1204203200_.jpg\",\"articleSection\":[\"Design Patterns\"],\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/micheladrianomedeiros.com.br\\\/blog\\\/padroes-de-implementacao-3\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/micheladrianomedeiros.com.br\\\/blog\\\/padroes-de-implementacao-3\\\/\",\"url\":\"https:\\\/\\\/micheladrianomedeiros.com.br\\\/blog\\\/padroes-de-implementacao-3\\\/\",\"name\":\"Padr\u00f5es de Implementa\u00e7\u00e3o #3 - Viciados em Aprender\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/micheladrianomedeiros.com.br\\\/blog\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/micheladrianomedeiros.com.br\\\/blog\\\/padroes-de-implementacao-3\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/micheladrianomedeiros.com.br\\\/blog\\\/padroes-de-implementacao-3\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/micheladrianomedeiros.com.br\\\/blog\\\/wp-content\\\/uploads\\\/2019\\\/08\\\/41quZ0OgNxL._SX348_BO1204203200_.jpg\",\"datePublished\":\"2020-05-25T14:49:08+00:00\",\"dateModified\":\"2020-05-25T14:49:10+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/micheladrianomedeiros.com.br\\\/blog\\\/padroes-de-implementacao-3\\\/#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/micheladrianomedeiros.com.br\\\/blog\\\/padroes-de-implementacao-3\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"pt-PT\",\"@id\":\"https:\\\/\\\/micheladrianomedeiros.com.br\\\/blog\\\/padroes-de-implementacao-3\\\/#primaryimage\",\"url\":\"https:\\\/\\\/micheladrianomedeiros.com.br\\\/blog\\\/wp-content\\\/uploads\\\/2019\\\/08\\\/41quZ0OgNxL._SX348_BO1204203200_.jpg\",\"contentUrl\":\"https:\\\/\\\/micheladrianomedeiros.com.br\\\/blog\\\/wp-content\\\/uploads\\\/2019\\\/08\\\/41quZ0OgNxL._SX348_BO1204203200_.jpg\",\"width\":350,\"height\":499,\"caption\":\"Padr\u00f5es de Implementa\u00e7\u00e3o\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/micheladrianomedeiros.com.br\\\/blog\\\/padroes-de-implementacao-3\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"In\u00edcio\",\"item\":\"https:\\\/\\\/micheladrianomedeiros.com.br\\\/blog\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Padr\u00f5es de Implementa\u00e7\u00e3o #3\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/micheladrianomedeiros.com.br\\\/blog\\\/#website\",\"url\":\"https:\\\/\\\/micheladrianomedeiros.com.br\\\/blog\\\/\",\"name\":\"Viciados em Aprender\",\"description\":\"Queremos aprender tudo o que for poss\u00edvel nesta vida.\",\"publisher\":{\"@id\":\"https:\\\/\\\/micheladrianomedeiros.com.br\\\/blog\\\/#\\\/schema\\\/person\\\/687a6d17428a0f0e040aefbd858ebc1e\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/micheladrianomedeiros.com.br\\\/blog\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"pt-PT\"},{\"@type\":[\"Person\",\"Organization\"],\"@id\":\"https:\\\/\\\/micheladrianomedeiros.com.br\\\/blog\\\/#\\\/schema\\\/person\\\/687a6d17428a0f0e040aefbd858ebc1e\",\"name\":\"blackzig\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"pt-PT\",\"@id\":\"https:\\\/\\\/micheladrianomedeiros.com.br\\\/blog\\\/wp-content\\\/uploads\\\/2025\\\/07\\\/a7e4b18a2d7254b5cf6da7ca7f92dc71da86905bd1de486e98e3a98664e058f2.jpg\",\"url\":\"https:\\\/\\\/micheladrianomedeiros.com.br\\\/blog\\\/wp-content\\\/uploads\\\/2025\\\/07\\\/a7e4b18a2d7254b5cf6da7ca7f92dc71da86905bd1de486e98e3a98664e058f2.jpg\",\"contentUrl\":\"https:\\\/\\\/micheladrianomedeiros.com.br\\\/blog\\\/wp-content\\\/uploads\\\/2025\\\/07\\\/a7e4b18a2d7254b5cf6da7ca7f92dc71da86905bd1de486e98e3a98664e058f2.jpg\",\"width\":1920,\"height\":1080,\"caption\":\"blackzig\"},\"logo\":{\"@id\":\"https:\\\/\\\/micheladrianomedeiros.com.br\\\/blog\\\/wp-content\\\/uploads\\\/2025\\\/07\\\/a7e4b18a2d7254b5cf6da7ca7f92dc71da86905bd1de486e98e3a98664e058f2.jpg\"},\"sameAs\":[\"http:\\\/\\\/www.micheladrianomedeiros.com.br\\\/\"]}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Padr\u00f5es de Implementa\u00e7\u00e3o #3 - Viciados em Aprender","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/micheladrianomedeiros.com.br\/blog\/padroes-de-implementacao-3\/","og_locale":"pt_PT","og_type":"article","og_title":"Padr\u00f5es de Implementa\u00e7\u00e3o #3","og_description":"Express\u00e3o Declarativa Outro princ\u00edpio por tr\u00e1s dos padr\u00f5es de implementa\u00e7\u00e3o \u00e9 expressar declarativamente o m\u00e1ximo poss\u00edvel da inten\u00e7\u00e3o. Uma programa\u00e7\u00e3o imperativa \u00e9 poderosa e flex\u00edvel, mas t\u00ea-la exige que se siga o fluxo de execu\u00e7\u00e3o. Deve-se construir mentalmente um modelo do estado do programa e dos fluxos de controle de dados. Para partes de um [&hellip;]","og_url":"https:\/\/micheladrianomedeiros.com.br\/blog\/padroes-de-implementacao-3\/","og_site_name":"Viciados em Aprender","article_published_time":"2020-05-25T14:49:08+00:00","article_modified_time":"2020-05-25T14:49:10+00:00","og_image":[{"width":350,"height":499,"url":"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2019\/08\/41quZ0OgNxL._SX348_BO1204203200_.jpg","type":"image\/jpeg"}],"author":"blackzig","twitter_card":"summary_large_image","twitter_misc":{"Escrito por":"blackzig","Tempo estimado de leitura":"4 minutos"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/micheladrianomedeiros.com.br\/blog\/padroes-de-implementacao-3\/#article","isPartOf":{"@id":"https:\/\/micheladrianomedeiros.com.br\/blog\/padroes-de-implementacao-3\/"},"author":{"name":"blackzig","@id":"https:\/\/micheladrianomedeiros.com.br\/blog\/#\/schema\/person\/687a6d17428a0f0e040aefbd858ebc1e"},"headline":"Padr\u00f5es de Implementa\u00e7\u00e3o #3","datePublished":"2020-05-25T14:49:08+00:00","dateModified":"2020-05-25T14:49:10+00:00","mainEntityOfPage":{"@id":"https:\/\/micheladrianomedeiros.com.br\/blog\/padroes-de-implementacao-3\/"},"wordCount":774,"commentCount":0,"publisher":{"@id":"https:\/\/micheladrianomedeiros.com.br\/blog\/#\/schema\/person\/687a6d17428a0f0e040aefbd858ebc1e"},"image":{"@id":"https:\/\/micheladrianomedeiros.com.br\/blog\/padroes-de-implementacao-3\/#primaryimage"},"thumbnailUrl":"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2019\/08\/41quZ0OgNxL._SX348_BO1204203200_.jpg","articleSection":["Design Patterns"],"inLanguage":"pt-PT","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/micheladrianomedeiros.com.br\/blog\/padroes-de-implementacao-3\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/micheladrianomedeiros.com.br\/blog\/padroes-de-implementacao-3\/","url":"https:\/\/micheladrianomedeiros.com.br\/blog\/padroes-de-implementacao-3\/","name":"Padr\u00f5es de Implementa\u00e7\u00e3o #3 - Viciados em Aprender","isPartOf":{"@id":"https:\/\/micheladrianomedeiros.com.br\/blog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/micheladrianomedeiros.com.br\/blog\/padroes-de-implementacao-3\/#primaryimage"},"image":{"@id":"https:\/\/micheladrianomedeiros.com.br\/blog\/padroes-de-implementacao-3\/#primaryimage"},"thumbnailUrl":"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2019\/08\/41quZ0OgNxL._SX348_BO1204203200_.jpg","datePublished":"2020-05-25T14:49:08+00:00","dateModified":"2020-05-25T14:49:10+00:00","breadcrumb":{"@id":"https:\/\/micheladrianomedeiros.com.br\/blog\/padroes-de-implementacao-3\/#breadcrumb"},"inLanguage":"pt-PT","potentialAction":[{"@type":"ReadAction","target":["https:\/\/micheladrianomedeiros.com.br\/blog\/padroes-de-implementacao-3\/"]}]},{"@type":"ImageObject","inLanguage":"pt-PT","@id":"https:\/\/micheladrianomedeiros.com.br\/blog\/padroes-de-implementacao-3\/#primaryimage","url":"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2019\/08\/41quZ0OgNxL._SX348_BO1204203200_.jpg","contentUrl":"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2019\/08\/41quZ0OgNxL._SX348_BO1204203200_.jpg","width":350,"height":499,"caption":"Padr\u00f5es de Implementa\u00e7\u00e3o"},{"@type":"BreadcrumbList","@id":"https:\/\/micheladrianomedeiros.com.br\/blog\/padroes-de-implementacao-3\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"In\u00edcio","item":"https:\/\/micheladrianomedeiros.com.br\/blog\/"},{"@type":"ListItem","position":2,"name":"Padr\u00f5es de Implementa\u00e7\u00e3o #3"}]},{"@type":"WebSite","@id":"https:\/\/micheladrianomedeiros.com.br\/blog\/#website","url":"https:\/\/micheladrianomedeiros.com.br\/blog\/","name":"Viciados em Aprender","description":"Queremos aprender tudo o que for poss\u00edvel nesta vida.","publisher":{"@id":"https:\/\/micheladrianomedeiros.com.br\/blog\/#\/schema\/person\/687a6d17428a0f0e040aefbd858ebc1e"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/micheladrianomedeiros.com.br\/blog\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"pt-PT"},{"@type":["Person","Organization"],"@id":"https:\/\/micheladrianomedeiros.com.br\/blog\/#\/schema\/person\/687a6d17428a0f0e040aefbd858ebc1e","name":"blackzig","image":{"@type":"ImageObject","inLanguage":"pt-PT","@id":"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2025\/07\/a7e4b18a2d7254b5cf6da7ca7f92dc71da86905bd1de486e98e3a98664e058f2.jpg","url":"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2025\/07\/a7e4b18a2d7254b5cf6da7ca7f92dc71da86905bd1de486e98e3a98664e058f2.jpg","contentUrl":"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2025\/07\/a7e4b18a2d7254b5cf6da7ca7f92dc71da86905bd1de486e98e3a98664e058f2.jpg","width":1920,"height":1080,"caption":"blackzig"},"logo":{"@id":"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2025\/07\/a7e4b18a2d7254b5cf6da7ca7f92dc71da86905bd1de486e98e3a98664e058f2.jpg"},"sameAs":["http:\/\/www.micheladrianomedeiros.com.br\/"]}]}},"_links":{"self":[{"href":"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-json\/wp\/v2\/posts\/907","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-json\/wp\/v2\/comments?post=907"}],"version-history":[{"count":1,"href":"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-json\/wp\/v2\/posts\/907\/revisions"}],"predecessor-version":[{"id":908,"href":"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-json\/wp\/v2\/posts\/907\/revisions\/908"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-json\/wp\/v2\/media\/354"}],"wp:attachment":[{"href":"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-json\/wp\/v2\/media?parent=907"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-json\/wp\/v2\/categories?post=907"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-json\/wp\/v2\/tags?post=907"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}