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	<title>Blog do Tino Gomes &#187; dicas</title>
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		<title>Blog do Tino Gomes &#187; dicas</title>
		<link>http://blog.tinogomes.com</link>
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		<item>
		<title>Truques de Ruby: DATA e __END__</title>
		<link>http://blog.tinogomes.com/2011/03/05/truques-de-ruby-data-e-__end__/</link>
		<comments>http://blog.tinogomes.com/2011/03/05/truques-de-ruby-data-e-__end__/#comments</comments>
		<pubDate>Sat, 05 Mar 2011 05:52:23 +0000</pubDate>
		<dc:creator>Celestino Gomes</dc:creator>
				<category><![CDATA[ruby]]></category>
		<category><![CDATA[tutorial]]></category>
		<category><![CDATA[dicas]]></category>
		<category><![CDATA[truques]]></category>

		<guid isPermaLink="false">http://blog.tinogomes.com/?p=400</guid>
		<description><![CDATA[Explico o uso das constantes __END__ e DATA<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=blog.tinogomes.com&amp;blog=2362964&amp;post=400&amp;subd=tinogomes&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>Em <a href="http://www.ruby-lang.org/en/">Ruby</a>, temos algumas <a href="http://www.zenspider.com/Languages/Ruby/QuickRef.html#20">CONSTANTES GLOBAIS</a> que facilitam nossa vida. Nesse post, lhes apresento DATA e __END__.</p>
<p>Normalmente os arquivos de scripts em Ruby são finalizados com <a href="http://en.wikipedia.org/wiki/End-of-file">EOF</a>, mas você pode indicar onde será o fim do script, adicionando a constante __END__ e com isso, todo bloco abaixo de __END__ não será processado pelo Ruby como comandos da linguagem. Então, podemos usar a constante DATA, que é uma instância de File do arquivo de script atual, porém considerando apenas o conteúdo que está abaixo da constante __END__. Vejamos alguns exemplos para entender melhor como funciona</p>
<pre>
require "yaml"
obj = YAML::load(DATA)

p obj

__END__
---
  -
    name: Adam
    age: 28
    admin: true
  -
    name: Maggie
    age: 28
    admin: false
</pre>
<p><a href="http://shifteleven.com/articles/2009/02/09/useless-ruby-tricks-data-and-__end__">Neste post de onde peguei o exemplo acima, apresenta outro uso com sinatra</a>.</p>
<br />Filed under: <a href='http://blog.tinogomes.com/category/ruby/'>ruby</a>, <a href='http://blog.tinogomes.com/category/tutorial/'>tutorial</a> Tagged: <a href='http://blog.tinogomes.com/tag/dicas/'>dicas</a>, <a href='http://blog.tinogomes.com/tag/ruby/'>ruby</a>, <a href='http://blog.tinogomes.com/tag/truques/'>truques</a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gocomments/tinogomes.wordpress.com/400/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/comments/tinogomes.wordpress.com/400/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/godelicious/tinogomes.wordpress.com/400/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/delicious/tinogomes.wordpress.com/400/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gofacebook/tinogomes.wordpress.com/400/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/facebook/tinogomes.wordpress.com/400/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gotwitter/tinogomes.wordpress.com/400/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/twitter/tinogomes.wordpress.com/400/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gostumble/tinogomes.wordpress.com/400/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/stumble/tinogomes.wordpress.com/400/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/godigg/tinogomes.wordpress.com/400/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/digg/tinogomes.wordpress.com/400/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/goreddit/tinogomes.wordpress.com/400/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/reddit/tinogomes.wordpress.com/400/" /></a> <img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=blog.tinogomes.com&amp;blog=2362964&amp;post=400&amp;subd=tinogomes&amp;ref=&amp;feed=1" width="1" height="1" />]]></content:encoded>
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		<slash:comments>0</slash:comments>
	
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			<media:title type="html">Tino</media:title>
		</media:content>
	</item>
		<item>
		<title>Nova série: &#8220;Eu não sabia que&#8230;&#8221;</title>
		<link>http://blog.tinogomes.com/2008/10/29/nova-serie-eu-nao-sabia-que/</link>
		<comments>http://blog.tinogomes.com/2008/10/29/nova-serie-eu-nao-sabia-que/#comments</comments>
		<pubDate>Wed, 29 Oct 2008 12:06:42 +0000</pubDate>
		<dc:creator>Celestino Gomes</dc:creator>
				<category><![CDATA[ruby]]></category>
		<category><![CDATA[dicas]]></category>
		<category><![CDATA[eu não sabia que]]></category>
		<category><![CDATA[singleton]]></category>

		<guid isPermaLink="false">http://tinogomes.wordpress.com/?p=163</guid>
		<description><![CDATA[Ao peger uma instância de um objeto qualquer e adicionar dinâmicamente um método a esta instância, ela se torna um singleton. $ irb &#62;&#62; o = Object.new =&#62; #&#60;Object:0x393cbc&#62; &#62;&#62; def o.name; puts 'Tino Gomes'; end =&#62; nil &#62;&#62; o.singleton_methods =&#62; ["name"] &#62;&#62; Legal, não? Não! Ah! tá, me dixculpa. :/ Publicado em ruby Tagged: [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=blog.tinogomes.com&amp;blog=2362964&amp;post=163&amp;subd=tinogomes&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>Ao peger uma instância de um objeto qualquer e adicionar dinâmicamente um método a esta instância, ela se torna um singleton.</p>
<pre>$ irb
&gt;&gt; o = Object.new
=&gt; #&lt;Object:0x393cbc&gt;
&gt;&gt; def o.name; puts 'Tino Gomes'; end
=&gt; nil
&gt;&gt; o.singleton_methods
=&gt; ["name"]
&gt;&gt;</pre>
<p>Legal, não? Não!<a title="O video do rato borrachudo!" href="http://www.youtube.com/watch?v=hca3bX1zpyY" target="_blank"> Ah! tá, me dixculpa.</a> :/</p>
<br />Publicado em ruby Tagged: dicas, eu não sabia que, ruby, singleton <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gocomments/tinogomes.wordpress.com/163/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/comments/tinogomes.wordpress.com/163/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/godelicious/tinogomes.wordpress.com/163/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/delicious/tinogomes.wordpress.com/163/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gofacebook/tinogomes.wordpress.com/163/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/facebook/tinogomes.wordpress.com/163/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gotwitter/tinogomes.wordpress.com/163/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/twitter/tinogomes.wordpress.com/163/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gostumble/tinogomes.wordpress.com/163/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/stumble/tinogomes.wordpress.com/163/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/godigg/tinogomes.wordpress.com/163/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/digg/tinogomes.wordpress.com/163/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/goreddit/tinogomes.wordpress.com/163/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/reddit/tinogomes.wordpress.com/163/" /></a> <img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=blog.tinogomes.com&amp;blog=2362964&amp;post=163&amp;subd=tinogomes&amp;ref=&amp;feed=1" width="1" height="1" />]]></content:encoded>
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		<slash:comments>0</slash:comments>
	
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			<media:title type="html">Tino</media:title>
		</media:content>
	</item>
		<item>
		<title>DRY config/database.yml</title>
		<link>http://blog.tinogomes.com/2008/03/23/dry-configdatabaseyml/</link>
		<comments>http://blog.tinogomes.com/2008/03/23/dry-configdatabaseyml/#comments</comments>
		<pubDate>Sun, 23 Mar 2008 02:13:29 +0000</pubDate>
		<dc:creator>Celestino Gomes</dc:creator>
				<category><![CDATA[ruby]]></category>
		<category><![CDATA[config]]></category>
		<category><![CDATA[database]]></category>
		<category><![CDATA[dicas]]></category>
		<category><![CDATA[dry]]></category>
		<category><![CDATA[rails]]></category>
		<category><![CDATA[yaml]]></category>

		<guid isPermaLink="false">http://tinogomes.wordpress.com/?p=25</guid>
		<description><![CDATA[Sempre esqueço como fazer um database.yml limpo, então resolvi publicar. login: &#38;login adapter: mysql username: username password: password host: mysql.example.com development: &#60;&#60;: *login database: app_dev test: &#60;&#60;: *login database: app_test production: &#60;&#60;: *login database: app_prod Este exemplo foi extraído aqui.<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=blog.tinogomes.com&amp;blog=2362964&amp;post=25&amp;subd=tinogomes&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>Sempre esqueço como fazer um database.yml limpo, então resolvi publicar.</p>
<pre><code>
login: &amp;login
  adapter: mysql
  username: username
  password: password
  host: mysql.example.com

development:
  &lt;&lt;: *login
  database: app_dev

test:
  &lt;&lt;: *login
  database: app_test

production:
  &lt;&lt;: *login
  database: app_prod</code></pre>
<p>Este exemplo foi extraído <a title="Veja o código!" href="http://snippets.dzone.com/posts/show/2263" target="_blank">aqui</a>.</p>
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			<media:title type="html">Tino</media:title>
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