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MongoDB: Combine data from multiple collections into one..how?

...",age:"13"}); var users = db.users.find(); db.comments.save({userId: users[0]._id, "comment": "Hey, what's up?", created: new ISODate()}); db.comments.save({userId: users[1]._id, "comment": "Not much", created: new ISODate()}); db.comments.save({userId: users[0]._id, "comment": "Cool", created: new ...
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Factors in R: more than an annoyance?

... You should use factors. Yes they can be a pain, but my theory is that 90% of why they're a pain is because in read.table and read.csv, the argument stringsAsFactors = TRUE by default (and most users miss this subtlety). I say they are useful because model fitting packages like lme4 use factors a...
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Alternate output format for psql

...-- dda_id | 1121 u_id | 24 ab_id | 10304 dda_type | CHECKING dda_status | PENDING_VERIFICATION dda_is_deleted | f dda_verify_op_id | 44938 version | 2 created | 2012-03-06 21:37:50.585845 modified | 2012-0...
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Difference between getDefaultSharedPreferences and getSharedPreferences

...| edited Jan 14 '12 at 19:07 Simone 16.3k1010 gold badges6666 silver badges9696 bronze badges answered J...
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How can I get the actual stored procedure line number from an error message?

... answered Dec 30 '10 at 21:18 RickRick 3,85011 gold badge2424 silver badges2020 bronze badges ...
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What is the most efficient way to concatenate N arrays?

... 20 Answers 20 Active ...
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Jade: Links inside a paragraph

... As of jade 1.0 there's an easier way to deal with this, unfortunately I can't find it anywhere in the official documentation. You can add inline elements with the following syntax: #[a.someClass A Link!] So, an example without going i...
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Ignore Typescript Errors “property does not exist on value of type”

In VS2013 building stops when tsc exits with code 1. This was not the case in VS2012. 10 Answers ...
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How to programmatically send SMS on the iPhone?

... 406 Restrictions If you could send an SMS within a program on the iPhone, you'll be able to write ...
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How to present popover properly in iOS 8

...esentationController popoverContent.preferredContentSize = CGSizeMake(500,600) popover.delegate = self popover.sourceView = self.view popover.sourceRect = CGRectMake(100,100,0,0) self.presentViewController(nav, animated: true, completion: nil) } That's the way. You don't ta...