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	<title>Is there life beyond the LCD screen?</title>
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		<title>Is there life beyond the LCD screen?</title>
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		<title>Regex : a must know</title>
		<link>http://csplusplus.wordpress.com/2008/02/18/regex-a-must-know/</link>
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		<pubDate>Mon, 18 Feb 2008 13:12:46 +0000</pubDate>
		<dc:creator>csplusplus</dc:creator>
				<category><![CDATA[Coding 101]]></category>

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		<description><![CDATA[Unul dintre lucrurile extrem de utile pe care le-am descoperit in facultate au fost expresiile regulate. Probabil ca cel mai tare am dat cu nasul de ele la un curs de compilatoare unde se foloseau in scrierea parserului pentru a extrage atomii lexicali din fisier. Un alt moment in care m-am lovit de ele a [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=csplusplus.wordpress.com&amp;blog=2776894&amp;post=10&amp;subd=csplusplus&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>Unul dintre lucrurile extrem de utile pe care le-am descoperit in facultate au fost expresiile regulate. </p>
<p>Probabil ca cel mai tare am dat cu nasul de ele la un curs de compilatoare unde se foloseau in scrierea parserului pentru a extrage atomii lexicali din fisier.</p>
<p>Un alt moment in care m-am lovit de ele a fost in dezvoltarea de aplicatii web unde le-am folosit pentru validarea datelor de input si &#8220;curatarea&#8221; lor ( care e traducerea romana acceptata pentru &#8220;Sanitize&#8221; ??? )</p>
<p>Si evident un utilizator de linux le descopera utilitatea atunci cand descopera un sed sau cand isi da seama cat de util poate fi grep combinat cu regEx.</p>
<p>Pentru un mic ghid introductiv, sau un refresher puteti sa cititi tutorialul de aici:</p>
<p><a href="http://neverfear.org/blog/view/Regex_for_people_who_should_know_Regex" target="_blank">part 1</a>, <a href="http://neverfear.org/blog/view/Regex_tutorial_for_people_who_should_know_Regex__but_do_not___Part_2/" target="_blank">part 2</a></p>
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		<title>Atoi is evil :D</title>
		<link>http://csplusplus.wordpress.com/2008/02/18/atoi-is-evil-d/</link>
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		<pubDate>Mon, 18 Feb 2008 13:02:46 +0000</pubDate>
		<dc:creator>csplusplus</dc:creator>
				<category><![CDATA[Coding 101]]></category>

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		<description><![CDATA[Unul dintre avantajele majore ale limbajelor de programare de nivel inalt e ca pun la dispozitie functii/metode/proceduri care degreveaza developerul&#160; de &#8220;operatiile de bucatarie&#8221; gen : obtinerea atomilor dintr-un string, calculul unei puteri sau transformarea unui sir de caractere intr-o valoare intreaga. Dar aceasta degrevareis co este o sabie cu 2 taisuri. Un programator poate [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=csplusplus.wordpress.com&amp;blog=2776894&amp;post=9&amp;subd=csplusplus&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>Unul dintre avantajele majore ale limbajelor de programare de nivel inalt e ca pun la dispozitie functii/metode/proceduri care degreveaza developerul&nbsp; de &#8220;operatiile de bucatarie&#8221; gen : obtinerea atomilor dintr-un string, calculul unei puteri sau transformarea unui sir de caractere intr-o valoare intreaga.
<p>Dar aceasta degrevareis co este o sabie cu 2 taisuri. Un programator poate folosi o functie de biblioteca care ii salveaza 10 minute de coding dar care odata ce programul ajunge sa fie folosit &#8220;in production&#8221; se poate dovedi a fi o alegere proasta ce diminueaza considerabil performanta aplicatiei.
<p>E adevarat totusi ca nu toate aplicatiile sunt atat de &#8220;pretentioase&#8221;, dar eu cred ca e bine sa stii totusi cat de bine functioneaza metodele pe care le folosesti.
<p>Un articol interesant pe tema asta <a href="http://1-800-magic.blogspot.com/2008/02/down-with-atoi.html" target="_blank">aici</a></p>
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		<title>Sony XPERIA X1</title>
		<link>http://csplusplus.wordpress.com/2008/02/11/sony-xperia-x1/</link>
		<comments>http://csplusplus.wordpress.com/2008/02/11/sony-xperia-x1/#comments</comments>
		<pubDate>Mon, 11 Feb 2008 00:03:46 +0000</pubDate>
		<dc:creator>csplusplus</dc:creator>
				<category><![CDATA[Geek toys]]></category>
		<category><![CDATA[Apple]]></category>
		<category><![CDATA[iPhone]]></category>
		<category><![CDATA[Nokia]]></category>
		<category><![CDATA[Sony Ericsson]]></category>
		<category><![CDATA[XPERIA]]></category>

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		<description><![CDATA[I love Nokia. Daca maine ar trebui sa-mi aleg un telefon nu as ezita si mi-as lua unul facut de firma finlandeza. Pe de alta parte intotdeauna am avut a soft spot pt seria P de la Sony-Ericsson ( gen asta ). Bineinteles ca mai exista si favoritul numarul 1 al oamenilor trendy-cool : the [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=csplusplus.wordpress.com&amp;blog=2776894&amp;post=7&amp;subd=csplusplus&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>I love Nokia. Daca maine ar trebui sa-mi aleg un telefon nu as ezita si mi-as lua unul facut de firma finlandeza. Pe de alta parte intotdeauna am avut a soft spot pt seria P de la Sony-Ericsson ( gen <a TARGET="_blank" HREF="http://www.sonyericsson.com/cws/products/mobilephones/overview/p1i?cc=ro&amp;lc=ro">asta</a> ).</p>
<p>Bineinteles ca mai exista si favoritul numarul 1 al oamenilor trendy-cool : the iPhone. O jucarie simpatica dar careia ii lipsesc unele facilitati. Vorba aia &#8230; de la Apple nu merita sa-ti iei niciodata prima generatie dintr-un produs.  Partea cool la iPhone este ca a speriat putin companiile producatoare de telefoane mobile care acum vor investi mai mult in R&amp;D.</p>
<p>Si rezultatele nu intarzie sa apara. Uitati-va la aceasta mica bijuterie:</p>
<p><a TARGET="_blank" HREF="http://gizmodo.com/354742/xperia-x1-hiptop-killer-sony-ericssons-first-video-plus-gallery">Sony XPERIA X1</a></p>
<p>Touch-screen, camera de 3.2MP, Windows Mobile 6, Radio, Java, IE ( vorba celor de pe gizmodo &#8230;il inlocuim cu Opera ), RSS pentru a fi constant la curent cu evolutia blogosferei <img src='http://s1.wp.com/wp-includes/images/smilies/icon_wink.gif' alt=':wink:' class='wp-smiley' />  , design simpatic, SD  card, quad band&#8230;.</p>
<p>It seems like i have a new wish for this Xmas.</p>
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		<title>A beautiful quicksort</title>
		<link>http://csplusplus.wordpress.com/2008/02/07/a-beautiful-quicksort/</link>
		<comments>http://csplusplus.wordpress.com/2008/02/07/a-beautiful-quicksort/#comments</comments>
		<pubDate>Thu, 07 Feb 2008 10:09:51 +0000</pubDate>
		<dc:creator>csplusplus</dc:creator>
				<category><![CDATA[Beautiful stuff]]></category>

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		<description><![CDATA[Google TT :<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=csplusplus.wordpress.com&amp;blog=2776894&amp;post=4&amp;subd=csplusplus&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>Google TT :</p>
<span style='text-align:center;display:block;'><object width='400' height='330' type='application/x-shockwave-flash' data='http://video.google.com/googleplayer.swf?docId=-1031789501179533828'><param name='allowScriptAccess' value='never' /><param name='movie' value='http://video.google.com/googleplayer.swf?docId=-1031789501179533828'/><param name='quality' value='best'/><param name='bgcolor' value='#ffffff' /><param name='scale' value='noScale' /><param name='wmode' value='opaque' /></object></span>
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		<title>A beautiful function</title>
		<link>http://csplusplus.wordpress.com/2008/02/06/a-beautiful-function/</link>
		<comments>http://csplusplus.wordpress.com/2008/02/06/a-beautiful-function/#comments</comments>
		<pubDate>Wed, 06 Feb 2008 18:17:17 +0000</pubDate>
		<dc:creator>csplusplus</dc:creator>
				<category><![CDATA[Beautiful stuff]]></category>

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		<description><![CDATA[Una dintre diferentele intre un programator bun si unul slab este demonstrata de urmatoarea functie : float InvSqrt(float x) { float xhalf = 0.5f*x; int i = *(int*)&#38;x; // get bits for floating value i = 0x5f3759df - (i&#62;&#62;1); // gives initial guess y0 x = *(float*)&#38;i; // convert bits back to float x = [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=csplusplus.wordpress.com&amp;blog=2776894&amp;post=3&amp;subd=csplusplus&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>Una dintre diferentele intre un programator bun si unul slab este demonstrata de urmatoarea functie :</p>
<p><span id="more-3"></span></p>
<p><code>float InvSqrt(float x)<br />
{<br />
float xhalf = 0.5f*x;<br />
int i = *(int*)&amp;x; // get bits for floating value<br />
i = 0x5f3759df - (i&gt;&gt;1); // gives initial guess y0<br />
x = *(float*)&amp;i; // convert bits back to float<br />
x = x*(1.5f-xhalf*x*x); // Newton step, repeating increases accuracy<br />
return x;<br />
}</code></p>
<p>echivalent cu  1/Math.sqrt(x)  &#8230;sau nu.</p>
<p>O explicatie mai simpla <a HREF="http://www.jakevoytko.com/blog/2008/01/28/quake-3s-fast-square-root-function/" TARGET="_blank">aici</a> si una complexa <a HREF="http://www.lomont.org/Math/Papers/2003/InvSqrt.pdf" TARGET="_blank">aici</a>.</p>
<p>Nu uitati totusi de urmatorul citat :</p>
<p>&#8220;We should forget about small efficiencies, say about 97% of the time: premature optimization is the root of all evil.&#8221; (Knuth, Donald.)</p>
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		<title>Hello world!</title>
		<link>http://csplusplus.wordpress.com/2008/02/06/hello-world/</link>
		<comments>http://csplusplus.wordpress.com/2008/02/06/hello-world/#comments</comments>
		<pubDate>Wed, 06 Feb 2008 17:57:26 +0000</pubDate>
		<dc:creator>csplusplus</dc:creator>
				<category><![CDATA[/meFunny]]></category>
		<category><![CDATA[c]]></category>
		<category><![CDATA[hello world]]></category>
		<category><![CDATA[java]]></category>
		<category><![CDATA[linux]]></category>
		<category><![CDATA[python]]></category>
		<category><![CDATA[sql]]></category>

		<guid isPermaLink="false"></guid>
		<description><![CDATA[Basic : 10 PRINT "HELLO WORLD" Bash #!/bin/sh echo hello, world C #include #include int main(void) { printf("Hello, world\n"); return EXIT_SUCCESS; } C++ #include int main() { std::cout &#60;&#60; "Hello, World." &#60;&#60; std::endl; } Html &#8211; not really a programming language :p JavaLanguage: public class Hello { public static void main(String []args) { System.out.println("Hello World"); [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=csplusplus.wordpress.com&amp;blog=2776894&amp;post=1&amp;subd=csplusplus&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>Basic :<br />
<code><br />
10 PRINT "HELLO WORLD"</code></p>
<p>Bash<br />
<code><br />
#!/bin/sh<br />
echo hello, world</code></p>
<p>C<br />
<code> #include<br />
 #include </p>
<p> int main(void)<br />
 {<br />
  printf("Hello, world\n");<br />
  return EXIT_SUCCESS;<br />
 }  </code></p>
<p>C++<br />
<code> #include </p>
<p> int main()<br />
 {<br />
 	std::cout &lt;&lt; "Hello, World." &lt;&lt; std::endl;<br />
 }</code></p>
<p>Html &#8211; not really a programming language :p</p>
<p>JavaLanguage: </p>
<p> <code>public class Hello {<br />
  	public static void main(String []args) {<br />
 		System.out.println("Hello World");<br />
  	}<br />
 }<br />
</code></p>
<p>Object oriented Java </p>
<p> <code>class Greeting {<br />
  	void greet(Named target) {<br />
			System.out.println("Hello, " + target.getName() + "!");<br />
  	}<br />
 }</p>
<p> interface Named {<br />
  	String getName();<br />
 }</p>
<p> class World implements Named {<br />
  	String getName() {<br />
			return "World";<br />
  	}<br />
 }</p>
<p> class Main {<br />
  	public static void main( String[] args ) {<br />
			Greeting greeting = new Greeting();<br />
			greeting.greet(new World());<br />
  	}<br />
 }<br />
</code></p>
<p>Swing Java </p>
<p><code> public class Hello {<br />
  public static void main(String []args) {<br />
	JOptionPane.showMessageDialog(null,"Hello, world!");<br />
  }<br />
 }<br />
</code></p>
<p>JavaApplet: </p>
<p> <code>import java.applet.*;<br />
 import java.awt.*;<br />
 public class Hello extends Applet {<br />
  public void paint(Graphics g) {<br />
	g.drawString("Hello World", 25, 50);<br />
  }<br />
 }</code></p>
<p>JavaScript: </p>
<p><code>  document.writeln("Hello, World");<br />
</code><br />
Pop up:<br />
<code> alert("Hello, World");</code></p>
<p>PL/SQL </p>
<p>	<code>BEGIN<br />
	DBMS_OUTPUT.PUT_LINE('Frank and Beans');<br />
	END;</code></p>
<p>Python</p>
<p>You copy the following text into a file and call the file (hello.py) (remember python is sensitive of it&#8217;s indenting, which rocks <img src='http://s0.wp.com/wp-includes/images/smilies/icon_smile.gif' alt=':)' class='wp-smiley' />  ) </p>
<p><code> print "hello world"</code><br />
Now invoke the interpreter and pass it your file with the single command: python hello.py</p>
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