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    <title>DEV Community: Leonardo Rafael Dev</title>
    <description>The latest articles on DEV Community by Leonardo Rafael Dev (@leonardorafaeldev).</description>
    <link>https://dev.to/leonardorafaeldev</link>
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      <title>DEV Community: Leonardo Rafael Dev</title>
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      <title>[Boost]</title>
      <dc:creator>Leonardo Rafael Dev</dc:creator>
      <pubDate>Tue, 27 Oct 2026 00:44:25 +0000</pubDate>
      <link>https://dev.to/leonardorafaeldev/-1mon</link>
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    <item>
      <title>[Boost]</title>
      <dc:creator>Leonardo Rafael Dev</dc:creator>
      <pubDate>Mon, 06 Jan 2025 14:59:03 +0000</pubDate>
      <link>https://dev.to/leonardorafaeldev/-1l03</link>
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    <item>
      <title>Descomplicando Programação Orientada a Objetos (POO) com maizena e JavaScript</title>
      <dc:creator>Leonardo Rafael Dev</dc:creator>
      <pubDate>Wed, 02 Aug 2023 23:00:54 +0000</pubDate>
      <link>https://dev.to/leonardorafaeldev/descomplicando-programacao-orientada-a-objetos-poo-com-maizena-e-javascript-512</link>
      <guid>https://dev.to/leonardorafaeldev/descomplicando-programacao-orientada-a-objetos-poo-com-maizena-e-javascript-512</guid>
      <description>&lt;p&gt;&lt;strong&gt;Índice&lt;/strong&gt;&lt;/p&gt;

&lt;ol&gt;
&lt;li&gt;&lt;strong&gt;Prólogo&lt;/strong&gt;&lt;/li&gt;
&lt;li&gt; &lt;strong&gt;O que é POO?&lt;/strong&gt;
&lt;/li&gt;
&lt;li&gt; &lt;strong&gt;O que são objetos?&lt;/strong&gt;
&lt;/li&gt;
&lt;li&gt; &lt;strong&gt;Herança em POO&lt;/strong&gt;
&lt;/li&gt;
&lt;li&gt; &lt;strong&gt;Polimorfismo em POO&lt;/strong&gt;
&lt;/li&gt;
&lt;/ol&gt;

&lt;h2&gt;
  
  
  1. Prólogo
&lt;/h2&gt;

&lt;p&gt;Olá a todos! Estou aqui com meu primeiro artigo e, honestamente, estou um pouco nervoso, mas animado. Decidi colocar a caneta no papel (ou os dedos no teclado) principalmente por causa dos obstáculos que encontrei quando mergulhei no mundo da programação orientada a objetos. Além disso, sempre fui um pouco tímido quando se trata de escrever, então pensei: por que não melhorar isso também?&lt;/p&gt;

&lt;p&gt;Só para esclarecer: não sou nenhum gênio sênior da programação, apenas um desenvolvedor júnior compartilhando sua jornada de aprendizado. Então, se você tiver algum conselho ou comentário, por favor, sinta-se à vontade para&amp;nbsp;compartilhar.&lt;/p&gt;

&lt;h2&gt;
  
  
  2. 🤷‍♂️🤷‍♀️ O que é POO?
&lt;/h2&gt;

&lt;p&gt;Bem, se você chegou até este artigo, é porque tem algum interesse em &lt;strong&gt;Programação Orientada a Objetos&lt;/strong&gt;, ou &lt;strong&gt;POO **(ou **OOP&lt;/strong&gt;, na sigla em inglês). Basicamente, a POO é um paradigma de programação que, quando aplicado corretamente, pode tornar nosso código mais organizado, estruturado e reutilizável. Isso ocorre porque, ao adotar esse paradigma, trabalhamos com &lt;strong&gt;'objetos'&lt;/strong&gt; que possuem &lt;strong&gt;'propriedades'&lt;/strong&gt; (ou características) e &lt;strong&gt;'métodos'&lt;/strong&gt; (comportamentos relacionados a esses objetos).&lt;br&gt;
Mas não se preocupe, se você não está familiarizado com os termos &lt;strong&gt;'objetos'&lt;/strong&gt;, &lt;strong&gt;'métodos'&lt;/strong&gt; ou &lt;strong&gt;'propriedades'&lt;/strong&gt;, eu vou explicar&amp;nbsp;tudo,&amp;nbsp;beleza?&lt;/p&gt;
&lt;h2&gt;
  
  
  3.🤔📦 O que são objetos?
&lt;/h2&gt;

&lt;p&gt;Seguinte, para não complicar nem para você nem para mim, eu vou te mostrar e te explicar o que é um &lt;strong&gt;objeto&lt;/strong&gt; direto no código mesmo, usando uma "teoria" de memes. Para um meme existir, ele precisa de algumas &lt;strong&gt;propriedades&lt;/strong&gt; como "nome", "autor", "ano de criação" e "link da imagem", e comportamentos (&lt;strong&gt;métodos&lt;/strong&gt;) como "like" e "rt".&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;📦 Exemplo de objeto em JavaScript:&lt;/strong&gt;&lt;br&gt;
&lt;/p&gt;

&lt;div class="highlight js-code-highlight"&gt;
&lt;pre class="highlight javascript"&gt;&lt;code&gt;&lt;span class="c1"&gt;// aqui estamos criando o objeto "meme"&lt;/span&gt;
&lt;span class="kd"&gt;class&lt;/span&gt; &lt;span class="nx"&gt;Meme&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
  &lt;span class="c1"&gt;// aqui no construtor estamos passando as propriedades nome, autor etc..&lt;/span&gt;
  &lt;span class="kd"&gt;constructor&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;nome&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="nx"&gt;autor&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="nx"&gt;anoCriacao&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="nx"&gt;Linkimg&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
    &lt;span class="k"&gt;this&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;nome&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nx"&gt;nome&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt;
    &lt;span class="k"&gt;this&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;autor&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nx"&gt;autor&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt;
    &lt;span class="k"&gt;this&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;anoCriacao&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nx"&gt;anoCriacao&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt;
    &lt;span class="k"&gt;this&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;Linkimg&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nx"&gt;Linkimg&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt;
  &lt;span class="p"&gt;}&lt;/span&gt;

  &lt;span class="c1"&gt;// aqui estamos criando os metodos&lt;/span&gt;
  &lt;span class="nx"&gt;like&lt;/span&gt;&lt;span class="p"&gt;()&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
   &lt;span class="c1"&gt;// Criamos uma função e referenciamos a propriedade que queremos "instanciando" ela,    digamos, reutilizando-a.&lt;/span&gt;
    &lt;span class="nx"&gt;console&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;log&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="s2"&gt;`Meme &lt;/span&gt;&lt;span class="p"&gt;${&lt;/span&gt;&lt;span class="k"&gt;this&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;nome&lt;/span&gt;&lt;span class="p"&gt;}&lt;/span&gt;&lt;span class="s2"&gt; curtido na sua rede!`&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;
  &lt;span class="p"&gt;}&lt;/span&gt;

  &lt;span class="nx"&gt;rt&lt;/span&gt;&lt;span class="p"&gt;()&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
    &lt;span class="nx"&gt;console&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;log&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="s2"&gt;`Meme &lt;/span&gt;&lt;span class="p"&gt;${&lt;/span&gt;&lt;span class="k"&gt;this&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;nome&lt;/span&gt;&lt;span class="p"&gt;}&lt;/span&gt;&lt;span class="s2"&gt; retweetado na sua rede!`&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;
  &lt;span class="p"&gt;}&lt;/span&gt;
  &lt;span class="c1"&gt;// fim do objeto&lt;/span&gt;
&lt;span class="p"&gt;}&lt;/span&gt;

&lt;span class="c1"&gt;// ate agora nos criamos o objeto junto a seus metodos e como usamos?&lt;/span&gt;

&lt;span class="c1"&gt;// primeiro criamos uma variavel instanciando nosso objeto derivando suas propriedades&lt;/span&gt;
&lt;span class="c1"&gt;// no js utilizamos new para isso&lt;/span&gt;
&lt;span class="kd"&gt;const&lt;/span&gt; &lt;span class="nx"&gt;memedojoao&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="k"&gt;new&lt;/span&gt; &lt;span class="nx"&gt;Meme&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;
  &lt;span class="c1"&gt;// nome&lt;/span&gt;
  &lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="s2"&gt;memedojoao&lt;/span&gt;&lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt;
  &lt;span class="c1"&gt;// autor&lt;/span&gt;
  &lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="s2"&gt;joao&lt;/span&gt;&lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt;
  &lt;span class="c1"&gt;// anoCriacao&lt;/span&gt;
  &lt;span class="mi"&gt;2054&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt;
  &lt;span class="c1"&gt;// Linkimg&lt;/span&gt;
  &lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="s2"&gt;&amp;lt;https://umlink.com/memedojoao.png&amp;gt;&lt;/span&gt;&lt;span class="dl"&gt;"&lt;/span&gt;
&lt;span class="p"&gt;);&lt;/span&gt;
&lt;span class="c1"&gt;// desta maneira nos criamos um novo meme apenas usando uma estrutura ja criada sem ter que repetir mil e uma vezes um construtor e um objeto &amp;lt;3&lt;/span&gt;

&lt;span class="c1"&gt;// como estamos criando o memedojoao instanciando o objeto meme, dentro do nosso novo objeto (memedojoao) ja teremos os nossos metodos basta chama-lo.&lt;/span&gt;
&lt;span class="nx"&gt;memedojoao&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;like&lt;/span&gt;&lt;span class="p"&gt;();&lt;/span&gt;
&lt;span class="nx"&gt;memedojoao&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;rt&lt;/span&gt;&lt;span class="p"&gt;();&lt;/span&gt;

&lt;/code&gt;&lt;/pre&gt;

&lt;/div&gt;



&lt;h2&gt;
  
  
  4.📜🤝 Herança em POO
&lt;/h2&gt;

&lt;p&gt;Para entender a &lt;strong&gt;herança&lt;/strong&gt; em POO, vamos usar uma analogia um pouco mais leve: sabe quando você herda algo de um parente? Brincadeiras à parte, a herança é um dos principais motivos da POO ser tão popular, pois permite que um novo objeto ou classe herde &lt;strong&gt;propriedades&lt;/strong&gt; e comportamentos &lt;strong&gt;(métodos)&lt;/strong&gt; de outra classe ou objeto.&lt;/p&gt;

&lt;p&gt;Vamos supor que, além da classe 'meme', queremos criar uma 'meme2' que herda as propriedades e métodos de 'meme', mas agora queremos adicionar uma propriedade chamada 'tipo'. Para esses casos, utilizamos a herança, e o melhor de tudo, ninguém precisa 'morrer' para&amp;nbsp;isso&amp;nbsp;acontecer📉📈.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;😶‍🌫️🪦 Exemplo de herança em JavaScript:&lt;/strong&gt;&lt;br&gt;
&lt;/p&gt;

&lt;div class="highlight js-code-highlight"&gt;
&lt;pre class="highlight jsx"&gt;&lt;code&gt;&lt;span class="c1"&gt;// nosso bom e velho meme com suas propriedades e metodos&lt;/span&gt;
&lt;span class="kd"&gt;class&lt;/span&gt; &lt;span class="nx"&gt;Meme&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
  &lt;span class="kd"&gt;constructor&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;nome&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="nx"&gt;autor&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="nx"&gt;anoCriacao&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="nx"&gt;Linkimg&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
    &lt;span class="k"&gt;this&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;nome&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nx"&gt;nome&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt;
    &lt;span class="k"&gt;this&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;autor&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nx"&gt;autor&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt;
    &lt;span class="k"&gt;this&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;anoCriacao&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nx"&gt;anoCriacao&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt;
    &lt;span class="k"&gt;this&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;Linkimg&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nx"&gt;Linkimg&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt;
  &lt;span class="p"&gt;}&lt;/span&gt;

  &lt;span class="nx"&gt;like&lt;/span&gt;&lt;span class="p"&gt;()&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
    &lt;span class="nx"&gt;console&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;log&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="s2"&gt;`Meme &lt;/span&gt;&lt;span class="p"&gt;${&lt;/span&gt;&lt;span class="k"&gt;this&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;nome&lt;/span&gt;&lt;span class="p"&gt;}&lt;/span&gt;&lt;span class="s2"&gt; curtido na sua rede!`&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;
  &lt;span class="p"&gt;}&lt;/span&gt;

  &lt;span class="nx"&gt;rt&lt;/span&gt;&lt;span class="p"&gt;()&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
    &lt;span class="nx"&gt;console&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;log&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="s2"&gt;`Meme &lt;/span&gt;&lt;span class="p"&gt;${&lt;/span&gt;&lt;span class="k"&gt;this&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;nome&lt;/span&gt;&lt;span class="p"&gt;}&lt;/span&gt;&lt;span class="s2"&gt; retweetado na sua rede!`&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;
  &lt;span class="p"&gt;}&lt;/span&gt;

&lt;span class="p"&gt;}&lt;/span&gt;

&lt;span class="c1"&gt;// aqui estamos criando nosso novo objeto "classe" chamado meme 2 que deriva de Meme&lt;/span&gt;
&lt;span class="kd"&gt;class&lt;/span&gt; &lt;span class="nx"&gt;Meme2&lt;/span&gt; &lt;span class="kd"&gt;extends&lt;/span&gt; &lt;span class="nx"&gt;Meme&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
  &lt;span class="c1"&gt;// Passamos no construtor as propriedades de Meme e sua nova "tipo"&lt;/span&gt;
  &lt;span class="kd"&gt;constructor&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;nome&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="nx"&gt;autor&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="nx"&gt;anoCriacao&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="nx"&gt;Linkimg&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="nx"&gt;tipo&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
    &lt;span class="c1"&gt;//Usamos "super" para acessar as propriedades de classe que derivamos no caso Meme&lt;/span&gt;
    &lt;span class="k"&gt;super&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;nome&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="nx"&gt;autor&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="nx"&gt;anoCriacao&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="nx"&gt;Linkimg&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;
    &lt;span class="k"&gt;this&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;tipo&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nx"&gt;tipo&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt;
  &lt;span class="p"&gt;}&lt;/span&gt; 

  &lt;span class="c1"&gt;// Como nao temos um metodo que mostre nosso tipo criamos um &lt;/span&gt;
  &lt;span class="nx"&gt;exibirTipo&lt;/span&gt;&lt;span class="p"&gt;()&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
    &lt;span class="nx"&gt;console&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;log&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="s2"&gt;`Tipo do Meme &lt;/span&gt;&lt;span class="p"&gt;${&lt;/span&gt;&lt;span class="k"&gt;this&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;nome&lt;/span&gt;&lt;span class="p"&gt;}&lt;/span&gt;&lt;span class="s2"&gt;: &lt;/span&gt;&lt;span class="p"&gt;${&lt;/span&gt;&lt;span class="k"&gt;this&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;tipo&lt;/span&gt;&lt;span class="p"&gt;}&lt;/span&gt;&lt;span class="s2"&gt;`&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;
  &lt;span class="p"&gt;}&lt;/span&gt;
&lt;span class="p"&gt;}&lt;/span&gt;

&lt;span class="kd"&gt;const&lt;/span&gt; &lt;span class="nx"&gt;memedoleleo&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="k"&gt;new&lt;/span&gt; &lt;span class="nx"&gt;Meme2&lt;/span&gt; &lt;span class="p"&gt;(&lt;/span&gt;
  &lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="s2"&gt;memedoleleo&lt;/span&gt;&lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt;
  &lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="s2"&gt;leleo&lt;/span&gt;&lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt;
   &lt;span class="mi"&gt;2022&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt;
  &lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="s2"&gt;&amp;lt;https://umlink.com/memedoleleo.png&amp;gt;&lt;/span&gt;&lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt;
  &lt;span class="c1"&gt;// apos adicionar as propriedades que estamos acostumados adicionamos a nossa nova propriedade&lt;/span&gt;
  &lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="s2"&gt;millenal&lt;/span&gt;&lt;span class="dl"&gt;"&lt;/span&gt;
&lt;span class="p"&gt;);&lt;/span&gt;

&lt;span class="nx"&gt;memedoleleo&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;rt&lt;/span&gt;&lt;span class="p"&gt;();&lt;/span&gt;
&lt;span class="nx"&gt;memedoleleo&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;exibirTipo&lt;/span&gt;&lt;span class="p"&gt;();&lt;/span&gt;


&lt;/code&gt;&lt;/pre&gt;

&lt;/div&gt;



&lt;h2&gt;
  
  
  5.🌟🐣 Polimorfismo em POO
&lt;/h2&gt;

&lt;p&gt;Ok, admito que demorei um pouco para entender este conceito, então vamos juntos nessa. O polimorfismo, dentro da POO, permite que objetos de diferentes classes sejam tratados de maneira igual. Isso torna nosso código mais utilizável e flexível. Vou tentar explicar isso usando o método 'like', aplicável tanto para a classe 'meme' quanto&amp;nbsp;para&amp;nbsp;'meme2.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;😷🫥 Exemplo de polimorfismo em JavaScript:&lt;/strong&gt;&lt;br&gt;
&lt;/p&gt;

&lt;div class="highlight js-code-highlight"&gt;
&lt;pre class="highlight jsx"&gt;&lt;code&gt;&lt;span class="kd"&gt;class&lt;/span&gt; &lt;span class="nx"&gt;Meme&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
  &lt;span class="kd"&gt;constructor&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;nome&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="nx"&gt;autor&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="nx"&gt;anoCriacao&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="nx"&gt;Linkimg&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
    &lt;span class="k"&gt;this&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;nome&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nx"&gt;nome&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt;
    &lt;span class="k"&gt;this&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;autor&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nx"&gt;autor&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt;
    &lt;span class="k"&gt;this&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;anoCriacao&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nx"&gt;anoCriacao&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt;
    &lt;span class="k"&gt;this&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;Linkimg&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nx"&gt;Linkimg&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt;
  &lt;span class="p"&gt;}&lt;/span&gt;

  &lt;span class="nx"&gt;like&lt;/span&gt;&lt;span class="p"&gt;()&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
    &lt;span class="nx"&gt;console&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;log&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="s2"&gt;`Meme &lt;/span&gt;&lt;span class="p"&gt;${&lt;/span&gt;&lt;span class="k"&gt;this&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;nome&lt;/span&gt;&lt;span class="p"&gt;}&lt;/span&gt;&lt;span class="s2"&gt; curtido na sua rede!`&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;
  &lt;span class="p"&gt;}&lt;/span&gt;

  &lt;span class="nx"&gt;rt&lt;/span&gt;&lt;span class="p"&gt;()&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
    &lt;span class="nx"&gt;console&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;log&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="s2"&gt;`Meme &lt;/span&gt;&lt;span class="p"&gt;${&lt;/span&gt;&lt;span class="k"&gt;this&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;nome&lt;/span&gt;&lt;span class="p"&gt;}&lt;/span&gt;&lt;span class="s2"&gt; retweetado na sua rede!`&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;
  &lt;span class="p"&gt;}&lt;/span&gt;

&lt;span class="p"&gt;}&lt;/span&gt;

&lt;span class="kd"&gt;class&lt;/span&gt; &lt;span class="nx"&gt;Meme2&lt;/span&gt; &lt;span class="kd"&gt;extends&lt;/span&gt; &lt;span class="nx"&gt;Meme&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
  &lt;span class="kd"&gt;constructor&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;nome&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="nx"&gt;autor&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="nx"&gt;anoCriacao&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="nx"&gt;Linkimg&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="nx"&gt;tipo&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
    &lt;span class="k"&gt;super&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;nome&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="nx"&gt;autor&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="nx"&gt;anoCriacao&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="nx"&gt;Linkimg&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;
    &lt;span class="k"&gt;this&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;tipo&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nx"&gt;tipo&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt;
  &lt;span class="p"&gt;}&lt;/span&gt; 

  &lt;span class="nx"&gt;exibirTipo&lt;/span&gt;&lt;span class="p"&gt;()&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
    &lt;span class="nx"&gt;console&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;log&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="s2"&gt;`Tipo do Meme &lt;/span&gt;&lt;span class="p"&gt;${&lt;/span&gt;&lt;span class="k"&gt;this&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;nome&lt;/span&gt;&lt;span class="p"&gt;}&lt;/span&gt;&lt;span class="s2"&gt;: &lt;/span&gt;&lt;span class="p"&gt;${&lt;/span&gt;&lt;span class="k"&gt;this&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;tipo&lt;/span&gt;&lt;span class="p"&gt;}&lt;/span&gt;&lt;span class="s2"&gt;`&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;
  &lt;span class="p"&gt;}&lt;/span&gt;

  &lt;span class="nx"&gt;rt&lt;/span&gt;&lt;span class="p"&gt;()&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
    &lt;span class="nx"&gt;console&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;log&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="s2"&gt;`Meme &lt;/span&gt;&lt;span class="p"&gt;${&lt;/span&gt;&lt;span class="k"&gt;this&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;nome&lt;/span&gt;&lt;span class="p"&gt;}&lt;/span&gt;&lt;span class="s2"&gt; esta sendo curtido pelos &lt;/span&gt;&lt;span class="p"&gt;${&lt;/span&gt;&lt;span class="k"&gt;this&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;tipo&lt;/span&gt;&lt;span class="p"&gt;}&lt;/span&gt;&lt;span class="s2"&gt;`&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;
  &lt;span class="p"&gt;}&lt;/span&gt;

&lt;span class="p"&gt;}&lt;/span&gt;

&lt;span class="kd"&gt;const&lt;/span&gt; &lt;span class="nx"&gt;memedojoao&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="k"&gt;new&lt;/span&gt; &lt;span class="nx"&gt;Meme&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;
  &lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="s2"&gt;memedojoao&lt;/span&gt;&lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt;
  &lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="s2"&gt;joao&lt;/span&gt;&lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt;
  &lt;span class="mi"&gt;2054&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt;
  &lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="s2"&gt;&amp;lt;https://umlink.com/memedojoao.png&amp;gt;&lt;/span&gt;&lt;span class="dl"&gt;"&lt;/span&gt;
&lt;span class="p"&gt;);&lt;/span&gt;

&lt;span class="kd"&gt;const&lt;/span&gt; &lt;span class="nx"&gt;memedoleleo&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="k"&gt;new&lt;/span&gt; &lt;span class="nx"&gt;Meme2&lt;/span&gt; &lt;span class="p"&gt;(&lt;/span&gt;
  &lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="s2"&gt;memedoleleo&lt;/span&gt;&lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt;
  &lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="s2"&gt;leleo&lt;/span&gt;&lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt;
   &lt;span class="mi"&gt;2022&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt;
  &lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="s2"&gt;&amp;lt;https://umlink.com/memedoleleo.png&amp;gt;&lt;/span&gt;&lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt;
  &lt;span class="dl"&gt;"&lt;/span&gt;&lt;span class="s2"&gt;millenal&lt;/span&gt;&lt;span class="dl"&gt;"&lt;/span&gt;
&lt;span class="p"&gt;);&lt;/span&gt;

&lt;span class="c1"&gt;// Podemos ver que temos o método rt tanto no meme e meme2, porém com textos diferentes. Para utilizar o polimorfismo, precisamos criar fora das classes uma função que irá receber nossa classe e dentro dela chamar o método rt, que irá variar a escrita de acordo com a classe que for passada &amp;lt;3&lt;/span&gt;

&lt;span class="kd"&gt;function&lt;/span&gt; &lt;span class="nx"&gt;rtMeme&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;meme&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
  &lt;span class="nx"&gt;meme&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;rt&lt;/span&gt;&lt;span class="p"&gt;();&lt;/span&gt;
&lt;span class="p"&gt;}&lt;/span&gt;


&lt;span class="nx"&gt;rtMeme&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;memedojoao&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;
&lt;span class="nx"&gt;rtMeme&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;memedoleleo&lt;/span&gt; &lt;span class="p"&gt;);&lt;/span&gt;


&lt;/code&gt;&lt;/pre&gt;

&lt;/div&gt;



&lt;p&gt;Espero que este artigo tenha conseguido desembaraçar um pouco esses conceitos complexos de POO para você. Caso queira se aprofundar ainda mais, indico o repositório &lt;a href="https://github.com/he4rt/4noobs"&gt;4noobs &lt;/a&gt; da &lt;a href="https://heartdevs.com/"&gt;He4rt Developers&lt;/a&gt;, que para quem nunca ouviu falar é uma das maiores, se não a maior, comunidade open-source do Brasil. Além de incentivar o aprendizado, ela contém um repositório com conteúdo sobre várias linguagens de programação, paradigmas e outros assuntos relacionados, inclusive um sobre &lt;a href="https://github.com/atomotavio/POO4Noobs"&gt;POO&lt;/a&gt;💜🤝&lt;/p&gt;

&lt;p&gt;Ah, sobre a história da maizena meia-noite, te conto! Até a próxima!😶‍🌫️😶‍🌫️&lt;/p&gt;

</description>
      <category>webdev</category>
      <category>javascript</category>
      <category>beginners</category>
      <category>braziliandevs</category>
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