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How to sort a collection by date in MongoDB?

... @SamBrightman That function is just a callback. Whatever you want to do with the query result, you put that logic inside your callback. You can read more on what callbacks are and how they work to learn event based programming. – Sushant Gupt...
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How to convert a set to a list in python?

... It is already a list type(my_set) >>> <type 'list'> Do you want something like my_set = set([1,2,3,4]) my_list = list(my_set) print my_list >> [1, 2, 3, 4] EDIT : Output of your last comment >>> my_list = [1,2,3,4] ...
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Change font color for comments in vim

... This should be the default on Ubuntu. Comments are basically impossible to read when dark blue on the purple background. Thanks. I included this in my ~/.vimrc file. If someone wants to test what this looks like without doing that, just type the above command into vim after pressi...
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How to stop /#/ in browser with react-router?

... Note that history is a stand-alone package you'll need to install. – Jan Klimo Oct 24 '15 at 15:01 4 ...
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Load local JSON file into variable

...nts:queue" }, { "id": "0.79281", "name": " contents:mqq_error" } ] } You also had an extra }. share | improve this answer | follow ...
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Detect permission of camera in iOS

...se if(authStatus == AVAuthorizationStatusRestricted){ // restricted, normally won't happen } else if(authStatus == AVAuthorizationStatusNotDetermined){ // not determined?! [AVCaptureDevice requestAccessForMediaType:mediaType completionHandler:^(BOOL granted) { if(granted){ NSLog(@"Gr...
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How to validate an email address in PHP

...($email, FILTER_VALIDATE_EMAIL)) { // invalid emailaddress } Additionally you can check whether the domain defines an MX record: if (!checkdnsrr($domain, 'MX')) { // domain is not valid } But this still doesn't guarantee that the mail exists. The only way to find that out is by sending ...
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Is there a way to change the environment variables of another process in Unix?

...t one process can change another's environment variables (assuming they're all being run by the same user)? A general solution would be best, but if not, what about the specific case where one is a child of the other? ...
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Maven error: Could not find or load main class org.codehaus.plexus.classworlds.launcher.Launcher

I have installed a latest maven-3.0.4 on Windows 7 : The installation details are as follows: Installation Path : ...
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How to get a resource id with a known resource name?

... i need that integer value by passing resourcename dynamically – Aswan Aug 13 '10 at 11:48 Thankq lik...