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	<title>Luis Antonio Tavares</title>
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		<title>Luis Antonio Tavares</title>
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		<item>
		<title>Artigo Dojo Toolkit na prática – Java Magazine</title>
		<link>http://t4v4res.wordpress.com/2011/12/08/artigo-dojo-toolkit-na-pratica-java-magazine/</link>
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		<pubDate>Thu, 08 Dec 2011 15:23:35 +0000</pubDate>
		<dc:creator>t4v4res</dc:creator>
				<category><![CDATA[HTML]]></category>
		<category><![CDATA[Java]]></category>
		<category><![CDATA[Java Magazine]]></category>
		<category><![CDATA[Java Script]]></category>
		<category><![CDATA[Programação]]></category>

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		<description><![CDATA[A revista Java Magazine deste mês (edição 98) traz um artigo que escrevi abordando o Dojo Toolkit. Este artigo demonstra como utilizar componentes do Dojo Toolkit em uma aplicação web. No decorrer do mesmo é desenvolvido um exemplo ressaltando o &#8230; <a href="http://t4v4res.wordpress.com/2011/12/08/artigo-dojo-toolkit-na-pratica-java-magazine/">Continue lendo <span class="meta-nav">&#8594;</span></a><img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=t4v4res.wordpress.com&amp;blog=15170396&amp;post=119&amp;subd=t4v4res&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>A revista Java Magazine deste mês (edição 98) traz um artigo que escrevi abordando o Dojo Toolkit. Este artigo demonstra como utilizar componentes do Dojo Toolkit em uma aplicação web. No decorrer do mesmo é desenvolvido um exemplo ressaltando o uso de componentes como gráficos, grid e temas, assim como a validação de formulários. Tudo isso sendo analisado no contexto de um aplicativo Java que utiliza, em alguns momentos, a notação JSON para troca de informações entre um Servlet e páginas JSP.</p>
<div id="attachment_120" class="wp-caption aligncenter" style="width: 492px"><a href="http://t4v4res.files.wordpress.com/2011/12/capaonline_java98.jpg"><img class="size-full wp-image-120" title="Java Magazine 98" src="http://t4v4res.files.wordpress.com/2011/12/capaonline_java98.jpg?w=640" alt=""   /></a><p class="wp-caption-text">Java Magazine 98</p></div>
<p><strong>Lista de artigos desta edição:</strong></p>
<p>Novidades do Java 7 no NetBeans 7<br />
Serialização e deserialização em Java – Parte 1<br />
VRaptor 3 – Parte 4<br />
Seam 3: Forge, Solder e Catch<br />
<strong>Dojo Toolkit na prática</strong><br />
Padrões de projeto, aprecie com moderação<br />
BDD em aplicações Web<br />
Comunicação AJAX Cross-Domain – Parte 2</p>
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			<media:title type="html">Java Magazine 98</media:title>
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	</item>
		<item>
		<title>Alternativa ao uso de variáveis globais em C</title>
		<link>http://t4v4res.wordpress.com/2011/11/06/alternativa-para-o-uso-de-variaveis-globais/</link>
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		<pubDate>Sun, 06 Nov 2011 17:41:23 +0000</pubDate>
		<dc:creator>t4v4res</dc:creator>
				<category><![CDATA[Linguagem C]]></category>
		<category><![CDATA[Programação]]></category>

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		<description><![CDATA[O uso de variáveis globais em linguagem C não é recomendado, pois facilita a ocorrência de alguns problemas e dificulta a localização de erros no código fonte. Como as variáveis são públicas durante toda a execução do programa, elas podem &#8230; <a href="http://t4v4res.wordpress.com/2011/11/06/alternativa-para-o-uso-de-variaveis-globais/">Continue lendo <span class="meta-nav">&#8594;</span></a><img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=t4v4res.wordpress.com&amp;blog=15170396&amp;post=101&amp;subd=t4v4res&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>O uso de variáveis globais em linguagem C não é recomendado, pois facilita a ocorrência de alguns problemas e dificulta a localização de erros no código fonte. Como as variáveis são públicas durante toda a execução do programa, elas podem ser alteradas a qualquer momento no mesmo sem termos qualquer controle sobre isto.</p>
<p>O que vou apresentar neste <em>post</em> é uma alternativa simples ao uso de variáveis globais. Esta alternativa consiste em declarar como variáveis locais em um arquivo C, as variáveis que seriam globais. Veja o código a seguir:</p>
<p><pre class="brush: cpp;">
/*
* data_access.c
*/
static int data1 = 0;
static int data2 = 0;

int getData1(){
return data1;
}

void setData1(int d1){
data1 = d1;
}

int getData2(){
return data2;
}

void setData2(int d2){
data2 = d2;
}
</pre></p>
<p>Através do <strong>static</strong> limitamos o acesso às variáveis apenas para as funções do arquivo no qual as variáveis foram declaradas. Depois criamos funções para acessá-las (get e set) e deixamos o protótipo dessas funções em um arquivo header (.h). Veja na sequência o arquivo header:</p>
<p><pre class="brush: cpp;">
/*
* data_access.h
*/

#ifndef DATA_ACCESS_H_
#define DATA_ACCESS_H_

int getData1();
void setData1(int d1);

int getData2();
void setData2(int d2);

#endif /* DATA_ACCESS_H_ */
</pre></p>
<p>E então, incluímos este .h em todos os nossos módulos que vão acessar as variáveis. Este acesso às variáveis é feito através das funções get e set que criamos e não diretamente, pois as variáveis não são visíveis fora do módulo C que criamos. Veja um exemplo de código acessando as variáveis:</p>
<p><pre class="brush: cpp;">
#include &lt;stdio.h&gt;
#include &quot;data_access.h&quot;

int main (void){
printf(&quot;data 1: %d\n&quot;, getData1());
setData2(5);
printf(&quot;data 2: %d\n&quot;, getData2());
return 0;
}
</pre></p>
<p>Fazendo o acesso através de funções temos muito mais segurança no nosso código, pois podemos controlar os momentos em que estas variáveis são acessadas e limitar para que as funções de acesso somente sejam visíveis nos módulos que efetivamente precisem. Usando variáveis globais qualquer parte do programa pode acessar e alterar as variáveis sem termos nenhum controle sobre isso.</p>
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		<title>Como os usuários enxergam o programador&#8230;</title>
		<link>http://t4v4res.wordpress.com/2011/10/29/como-os-usuarios-enxergam-o-programador/</link>
		<comments>http://t4v4res.wordpress.com/2011/10/29/como-os-usuarios-enxergam-o-programador/#comments</comments>
		<pubDate>Sat, 29 Oct 2011 01:47:24 +0000</pubDate>
		<dc:creator>t4v4res</dc:creator>
				<category><![CDATA[Engraçadas]]></category>

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			<content:encoded><![CDATA[<div id="attachment_98" class="wp-caption aligncenter" style="width: 391px"><a href="http://t4v4res.files.wordpress.com/2011/10/mundo_programador.jpg"><img class="size-full wp-image-98 " title="Como os usuários enxergam o programador" src="http://t4v4res.files.wordpress.com/2011/10/mundo_programador.jpg?w=640" alt=""   /></a><p class="wp-caption-text">Como os usuários enxergam o programador</p></div>
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		<title>The Trooper Versão Lego</title>
		<link>http://t4v4res.wordpress.com/2011/10/23/the-trooper-versao-lego/</link>
		<comments>http://t4v4res.wordpress.com/2011/10/23/the-trooper-versao-lego/#comments</comments>
		<pubDate>Sun, 23 Oct 2011 22:02:10 +0000</pubDate>
		<dc:creator>t4v4res</dc:creator>
				<category><![CDATA[Iron Maiden]]></category>

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		<description><![CDATA[Para aqueles que gostam de Iron Maiden, olhem que legal esta versão Lego de The Trooper: Aqui vai a imagem original:<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=t4v4res.wordpress.com&amp;blog=15170396&amp;post=89&amp;subd=t4v4res&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>Para aqueles que gostam de Iron Maiden, olhem que legal esta versão Lego de The Trooper:</p>
<div id="attachment_91" class="wp-caption aligncenter" style="width: 510px"><a href="http://t4v4res.files.wordpress.com/2011/10/the-trooper.jpg"><img class="size-full wp-image-91" title="The Trooper" src="http://t4v4res.files.wordpress.com/2011/10/the-trooper.jpg?w=640" alt=""   /></a><p class="wp-caption-text">The Trooper Lego Version</p></div>
<p>Aqui vai a imagem original:</p>
<div id="attachment_92" class="wp-caption aligncenter" style="width: 310px"><a href="http://t4v4res.files.wordpress.com/2011/10/thetrooper1.jpg"><img class="size-full wp-image-92" title="The Trooper" src="http://t4v4res.files.wordpress.com/2011/10/thetrooper1.jpg?w=640" alt=""   /></a><p class="wp-caption-text">The Trooper</p></div>
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		<media:content url="http://t4v4res.files.wordpress.com/2011/10/the-trooper.jpg" medium="image">
			<media:title type="html">The Trooper</media:title>
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			<media:title type="html">The Trooper</media:title>
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		<title>Artigo jQuery UI – Java Magazine</title>
		<link>http://t4v4res.wordpress.com/2011/10/11/artigo-jquery-ui-%e2%80%93-java-magazine/</link>
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		<pubDate>Tue, 11 Oct 2011 13:54:15 +0000</pubDate>
		<dc:creator>t4v4res</dc:creator>
				<category><![CDATA[Java]]></category>
		<category><![CDATA[Java Magazine]]></category>
		<category><![CDATA[Programação]]></category>

		<guid isPermaLink="false">http://t4v4res.wordpress.com/?p=77</guid>
		<description><![CDATA[A edição da Java Magazine deste mês traz um artigo que escrevi abordando o desenvolvimento de aplicações web usando os componentes da biblioteca jQuery UI. No decorrer do mesmo são desenvolvidos dois exemplos: um utilizando o componente autocomplete e outro &#8230; <a href="http://t4v4res.wordpress.com/2011/10/11/artigo-jquery-ui-%e2%80%93-java-magazine/">Continue lendo <span class="meta-nav">&#8594;</span></a><img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=t4v4res.wordpress.com&amp;blog=15170396&amp;post=77&amp;subd=t4v4res&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>A edição da Java Magazine deste mês traz um artigo que escrevi abordando o desenvolvimento de aplicações web usando os componentes da biblioteca jQuery UI. No decorrer do mesmo são desenvolvidos dois exemplos: um utilizando o componente autocomplete e outro empregando o componente dialog. O artigo é a capa da edição 96 da revista.</p>
<div id="attachment_86" class="wp-caption aligncenter" style="width: 492px"><a href="http://t4v4res.files.wordpress.com/2011/10/javamagazine96.png"><img class="size-full wp-image-86" title="Java Magazine 96" src="http://t4v4res.files.wordpress.com/2011/10/javamagazine96.png?w=640" alt=""   /></a><p class="wp-caption-text">Java Magazine 96</p></div>
<p><strong>Lista de artigos desta edição:</strong></p>
<p><strong>jQuery UI na prática</strong><br />
Além da IDE – Parte 4<br />
VRaptor 3 – Parte 3<br />
Inversão de Controle – Parte 2<br />
Dissecando a Java Collections<br />
Nem parece Web: é Vaadin!<br />
Acessibilidade em Java<br />
A importância dos Padrões de Projeto</p>
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			<media:title type="html">Java Magazine 96</media:title>
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		<title>Super Scorpion World</title>
		<link>http://t4v4res.wordpress.com/2011/10/09/super-scorpion-world/</link>
		<comments>http://t4v4res.wordpress.com/2011/10/09/super-scorpion-world/#comments</comments>
		<pubDate>Sun, 09 Oct 2011 12:27:28 +0000</pubDate>
		<dc:creator>t4v4res</dc:creator>
				<category><![CDATA[Engraçadas]]></category>

		<guid isPermaLink="false">http://t4v4res.wordpress.com/?p=73</guid>
		<description><![CDATA[Muito legal!<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=t4v4res.wordpress.com&amp;blog=15170396&amp;post=73&amp;subd=t4v4res&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<div id="attachment_74" class="wp-caption aligncenter" style="width: 310px"><a href="http://t4v4res.files.wordpress.com/2011/10/funny-gifs-scorpion-in-super-mario-world.gif"><img src="http://t4v4res.files.wordpress.com/2011/10/funny-gifs-scorpion-in-super-mario-world.gif?w=640" alt="" title="Super Scorpion World"   class="size-full wp-image-74" /></a><p class="wp-caption-text">Super Scorpion World</p></div>
<p>Muito legal! <img src='http://s0.wp.com/wp-includes/images/smilies/icon_smile.gif' alt=':)' class='wp-smiley' /> </p>
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			<media:title type="html">Super Scorpion World</media:title>
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		<title>Você conhece banco de dados?</title>
		<link>http://t4v4res.wordpress.com/2011/09/16/voce-conhece-banco-de-dados/</link>
		<comments>http://t4v4res.wordpress.com/2011/09/16/voce-conhece-banco-de-dados/#comments</comments>
		<pubDate>Fri, 16 Sep 2011 15:53:10 +0000</pubDate>
		<dc:creator>t4v4res</dc:creator>
				<category><![CDATA[Engraçadas]]></category>

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		<description><![CDATA[Eu não conhecia&#8230;<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=t4v4res.wordpress.com&amp;blog=15170396&amp;post=68&amp;subd=t4v4res&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>Eu não conhecia&#8230;</p>
<div id="attachment_71" class="wp-caption aligncenter" style="width: 452px"><a href="http://t4v4res.files.wordpress.com/2011/09/banco-de-dados1.png"><img src="http://t4v4res.files.wordpress.com/2011/09/banco-de-dados1.png?w=640" alt="" title="Banco de Dados"   class="size-full wp-image-71" /></a><p class="wp-caption-text">Banco de Dados</p></div>
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		<title>Artigo Jython &#8211; Java Magazine</title>
		<link>http://t4v4res.wordpress.com/2011/09/15/artigo-jython-java-magazine/</link>
		<comments>http://t4v4res.wordpress.com/2011/09/15/artigo-jython-java-magazine/#comments</comments>
		<pubDate>Thu, 15 Sep 2011 21:57:30 +0000</pubDate>
		<dc:creator>t4v4res</dc:creator>
				<category><![CDATA[Programação]]></category>
		<category><![CDATA[Python]]></category>
		<category><![CDATA[Java]]></category>
		<category><![CDATA[Java Magazine]]></category>

		<guid isPermaLink="false">http://t4v4res.wordpress.com/?p=49</guid>
		<description><![CDATA[A edição da Java Magazine deste mês (edição 95) traz um artigo que escrevi abordando o desenvolvimento de aplicações com a tecnologia Jython, que permite a construção de aplicativos Java usando a sintaxe do Python. Lista de artigos desta edição: &#8230; <a href="http://t4v4res.wordpress.com/2011/09/15/artigo-jython-java-magazine/">Continue lendo <span class="meta-nav">&#8594;</span></a><img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=t4v4res.wordpress.com&amp;blog=15170396&amp;post=49&amp;subd=t4v4res&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>A edição da Java Magazine deste mês (edição 95) traz um artigo que escrevi abordando o desenvolvimento de aplicações com a tecnologia Jython, que permite a construção de aplicativos Java usando a sintaxe do Python.</p>
<div id="attachment_65" class="wp-caption aligncenter" style="width: 492px"><a href="http://t4v4res.files.wordpress.com/2011/09/javamagazine952.jpg"><img class="size-full wp-image-65" title="Java Magazine 95" src="http://t4v4res.files.wordpress.com/2011/09/javamagazine952.jpg?w=640" alt=""   /></a><p class="wp-caption-text">Java Magazine 95</p></div>
<p><strong>Lista de artigos desta edição:</strong></p>
<p>Distribuição de Dados com Java<br />
Java 7 – Aperfeiçoando o Java<br />
<strong>Jython </strong><br />
JSF com Prevayler<br />
Spring Security 3, JSF 2 e JPA 2<br />
Seam 3: complementando a lógica com Weld<br />
Inversão de Controle – Parte 1<br />
Nem parece Web: é Vaadin! &#8211; Parte 1 (Exclusivo)</p>
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			<media:title type="html">Java Magazine 95</media:title>
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		<title>Python Philosophy</title>
		<link>http://t4v4res.wordpress.com/2011/06/21/python-philosophy/</link>
		<comments>http://t4v4res.wordpress.com/2011/06/21/python-philosophy/#comments</comments>
		<pubDate>Tue, 21 Jun 2011 02:37:06 +0000</pubDate>
		<dc:creator>t4v4res</dc:creator>
				<category><![CDATA[Programação]]></category>
		<category><![CDATA[Python]]></category>

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		<description><![CDATA[Para quem não sabe, Easter Eggs no mundo do software é o conceito de você deixar alguma brincadeira ou comando secreto em sua aplicação. No caso do Python, ao executarmos a linha ilustrada pelo código a seguir, será exibido um &#8230; <a href="http://t4v4res.wordpress.com/2011/06/21/python-philosophy/">Continue lendo <span class="meta-nav">&#8594;</span></a><img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=t4v4res.wordpress.com&amp;blog=15170396&amp;post=53&amp;subd=t4v4res&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>Para quem não sabe, Easter Eggs no mundo do software é o conceito de você deixar alguma brincadeira ou comando secreto em sua aplicação. No caso do Python, ao executarmos a linha ilustrada pelo código a seguir, será exibido um texto de Tim Peters que aborda um pouco da filosofia do Python. </p>
<p><pre class="brush: python;">
import this
</pre></p>
<p><strong>A tradução do texto é apresentada a serguir:</strong></p>
<p>O Zen do Python, por Tim Peters</p>
<p>Bonito é melhor que feio.<br />
Explícito é melhor que implícito.<br />
Simples é melhor que complexo.<br />
Complexo é melhor que complicado.<br />
Linear é melhor do que aninhado.<br />
Esparso é melhor que denso.<br />
Legibilidade conta.<br />
Casos especiais não são especiais o bastante para quebrar as regras.<br />
Ainda que praticidade vença a pureza.<br />
Erros nunca devem passar silenciosamente.<br />
A menos que sejam explicitamente silenciados.<br />
Diante da ambigüidade, recuse a tentação de adivinhar.<br />
Deveria haver um — e preferencialmente só um — modo óbvio para fazer algo.<br />
Embora esse modo possa não ser óbvio a princípio a menos que você seja holandês.<br />
Agora é melhor que nunca.<br />
Embora nunca freqüentemente seja melhor que *já*.<br />
Se a implementação é difícil de explicar, é uma má idéia.<br />
Se a implementação é fácil de explicar, pode ser uma boa idéia.<br />
Namespaces são uma grande idéia — vamos ter mais dessas!</p>
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		<title>Uma visão engraçada da engenharia de software</title>
		<link>http://t4v4res.wordpress.com/2011/06/14/uma-visao-engracada-da-engenharia-de-software/</link>
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		<pubDate>Tue, 14 Jun 2011 16:34:08 +0000</pubDate>
		<dc:creator>t4v4res</dc:creator>
				<category><![CDATA[Engenharia de Software]]></category>
		<category><![CDATA[Engraçadas]]></category>

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		<description><![CDATA[O processo de desenvolvimento de software é crítico desde o levantamento de requisitos. A imagem a seguir ilustra de forma engraçada o processo de desenvolvimento de software.<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=t4v4res.wordpress.com&amp;blog=15170396&amp;post=50&amp;subd=t4v4res&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>O processo de desenvolvimento de software é crítico desde o levantamento de requisitos. A imagem a seguir ilustra de forma engraçada o processo de desenvolvimento de software.</p>
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