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MongoDB: Combine data from multiple collections into one..how?
...b.users.save({firstName:"Sarah",lastName:"T",gender:"F",country:"US",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.co...
Hidden features of Android development?
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edited Nov 13 '10 at 0:01
community wiki
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Date vs DateTime
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131
No there isn't. DateTime represents some point in time that is composed of a date and a time. H...
Switching to landscape mode in Android Emulator
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636
Try:
ctrl+fn+F11 on Mac to change the landscape to portrait and vice versa.
left-ctrl+F11o...
How to do ToString for a possibly null object?
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edited Sep 4 at 21:32
answered Oct 21 '10 at 12:56
A...
Best way to add “current” class to nav in Rails 3
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YannisYannis
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Syntax highlighting code with Javascript [closed]
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13 Answers
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Extracting .jar file with command line
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153
From the docs:
To extract the files from a jar file, use x, as in:
C:\Java> jar xf myFil...
Hash collision in git
... no entry for a 40 character hash. But an interpolation of the entries for 32 and 48 characters lands us in the range of 5*1022 git commits for a 0.1% probability of a collision. That is fifty thousand billion billion different commits, or fifty Zettacommits, before you have reached even a 0.1% cha...
Convert JSON String to JSON Object c#
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305
JObject defines method Parse for this:
JObject json = JObject.Parse(str);
You might want to...