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jQuery validate: How to add a rule for regular expression validation?

...this: $("#Textbox").rules("add", { regex: "^[a-zA-Z'.\\s]{1,40}$" }) Additionally, it looks like there is a file called additional-methods.js that contains the method "pattern", which can be a RegExp when created using the method without quotes. Edit The pattern function is now the preferred ...
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How do I sort an NSMutableArray with custom objects in it?

... Compare method Either you implement a compare-method for your object: - (NSComparisonResult)compare:(Person *)otherObject { return [self.birthDate compare:otherObject.birthDate]; } NSArray *sortedArray = [drinkDetails sortedArrayUsingS...
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When to use volatile with multi threading?

...le volatile to prevent the compiler caching the variable in a register and it thus not getting updated correctly. However two threads both accessing a shared variable is something which calls for protection via a mutex isn't it? But in that case, between the thread locking and releasing the mutex t...
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How to detect orientation change?

... Here's how I got it working: In AppDelegate.swift inside the didFinishLaunchingWithOptions function I put: NotificationCenter.default.addObserver(self, selector: #selector(AppDelegate.rotated), name: UIDevice.orientationDidChangeNotificati...
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Set up adb on Mac OS X

I spent quite sometime figuring how to set up adb on Mac, so I figure writing how to set it up might be useful to some people. adb is the command line tool to install and run android apps on your phone/emulator ...
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How can I convert an image into Base64 string using JavaScript?

... You can use the HTML5 <canvas> for it: Create a canvas, load your image into it and then use toDataURL() to get the Base64 representation (actually, it's a data: URL, but it contains the Base64-encoded image). ...
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How to get the difference between two arrays in JavaScript?

...c")); A better solution, if you don't care about backward compatibility, is using filter. But still, this solution works. share | improve this answer | follow ...
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ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)

I am an electrical engineer who mainly plays around with power systems instead of programming. Recently, I have been following a manual to install a software suite on Ubuntu. I have no knowledge of mySQL at all, actually. I have done the following installations on my Ubuntu. ...
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How to get the instance id from within an ec2 instance?

How can I find out the instance id of an ec2 instance from within the ec2 instance? 32 Answers ...
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Generating a unique machine id

I need to write a function that generates an id that is unique for a given machine running a Windows OS. 15 Answers ...