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How do I draw a shadow under a UIView?

I'm trying to draw a shadow under the bottom edge of a UIView in Cocoa Touch. I understand that I should use CGContextSetShadow() to draw the shadow, but the Quartz 2D programming guide is a little vague: ...
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How do I load a PHP file into a variable?

... I don't see how this will pass the POST or GET. I think neobie's answer would be more correct and appropriate, since the external PHP file would be processed in the context of the current one. – ADTC ...
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How to update PATH variable permanently from Windows command line?

... The documentation on how to do this can be found on MSDN. The key extract is this: To programmatically add or modify system environment variables, add them to the HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Session Ma...
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Why is Multiple Inheritance not allowed in Java or C#?

...e merged or redundant. Before we can implement MI in the CLR, we have to do a survey of all the languages, figure out the common concepts, and decide how to express them in a language-neutral manner. We would also have to decide whether MI belongs in the CLS and what this would mean fo...
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How do I get bit-by-bit data from an integer value in C?

... If you want the k-th bit of n, then do (n & ( 1 << k )) >> k Here we create a mask, apply the mask to n, and then right shift the masked value to get just the bit we want. We could write it out more fully as: int mask = 1 << k; ...
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How do you create a random string that's suitable for a session ID in PostgreSQL?

I'd like to make a random string for use in session verification using PostgreSQL. I know I can get a random number with SELECT random() , so I tried SELECT md5(random()) , but that doesn't work. How can I do this? ...
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How do I limit the number of returned items?

... In the latest mongoose (3.8.1 at the time of writing), you do two things differently: (1) you have to pass single argument to sort(), which must be an array of constraints or just one constraint, and (2) execFind() is gone, and replaced with exec() instead. Therefore, with the mongoo...
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Linq to SQL how to do “where [column] in (list of values)”

...ntains(codeData.CodeId) select codeData; But you might as well do that in dot notation: var foo = channel.AsQueryable<CodeData>() .Where(codeData => codeIDs.Contains(codeData.CodeId)); ...
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How to export collection to CSV in MongoDB?

How do you export all the records in a MongoDB collection to a .csv file? 11 Answers ...
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Passing multiple variables in @RequestBody to a Spring MVC controller using Ajax

Is it necessary to wrap in a backing object? I want to do this: 14 Answers 14 ...