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What is copy-on-write?

...enance of instant snapshot on database servers like Microsoft SQL Server 2005. Instant snapshots preserve a static view of a database by storing a pre-modification copy of data when underlaying data are updated. Instant snapshots are used for testing uses or moment-dependent reports and should not b...
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How to set java_home on Windows 7?

... RobsRobs 7,99955 gold badges3535 silver badges5050 bronze badges 122 ...
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How do you do a limit query in JPQL or HQL?

...cently upgraded from 2 to 3 and same thing, top X is now throwing a parser error. However, when I added setMaxResults on the query, it did generate a TOP X in the resulting SQL (using MsSql2008Dialect). This is good. – Thierry_S Nov 4 '13 at 17:00 ...
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Traits vs. interfaces

...s of several different classes. For example: trait ToolKit { public $errors = array(); public function error($msg) { $this->errors[] = $msg; return false; } } You can have and use this "error" method in any class that uses this trait. class Something { us...
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Extracting .jar file with command line

... Ok, When I do that jar xf... command, I get the error: 'jar' is not recognized as an internal or external command,operable program or batch file. How do I fix this? – Bobby C Dec 10 '11 at 5:09 ...
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The name 'model' does not exist in current context in MVC3

... an project. When I tried to add the following declaration to it, I get an error: "The name 'model' does not exist in current context". ...
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HTML5 Local Storage fallback solutions [closed]

... * >> document.cookie = "bar=test; expires=Thu, 14 Jun 2018 13:05:38 GMT; path=/" * the value of document.cookie may look like * >> "foo=value; bar=test" */ var nameEQ = name + "="; // what we are looking for var ca = ...
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In where shall I use isset() and !empty()

...d only for variables and not just values, so isset("foobar") will raise an error. As of PHP 5.5, empty supports both variables and expressions. So your first question should rather be if isset returns true for a variable that holds an empty string. And the answer is: $var = ""; var_dump(isset($var...
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DirectX SDK (June 2010) Installation Problems: Error Code S1023

...tributable Setup_20110608_xxx.html ## and check if you have the following error Installation Blockers: A newer version of Microsoft Visual C++ 2010 Redistributable has been detected on the machine. Final Result: Installation failed with error code: (0x000013EC), "A StopBlock was hit o...
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How to resize an image with OpenCV2.0 and Python2.6

... your solution using the scaling factors returns an error on cv2.resize() saying 'src is not a numpy array, neither a scalar.' please advise? – BenP Jan 29 '19 at 17:53 ...