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Random record from MongoDB

...} }, { $sample: { size: 1 } } ]) As noted in the comments, when size is greater than 1, there may be duplicates in the returned document sample. share | improve this answer | ...
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is it possible to evenly distribute buttons across the width of an android linearlayout

...ains 3 buttons. I want the 3 buttons to have a fixed width and be evenly distributed across the width of the linear layout. ...
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Given two directory trees, how can I find out which files differ by content?

...at you need. If you also want to see differences for files that may not exist in either directory: diff --brief --recursive --new-file dir1/ dir2/ # GNU long options diff -qrN dir1/ dir2/ # common short options share ...
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Android Debug Bridge (adb) device - no permissions [duplicate]

... I just had this problem myself under Debian Wheezy. I restarted the adb daemon with sudo: sudo ./adb kill-server sudo ./adb start-server sudo ./adb devices Everything is working :) ...
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What is the Windows equivalent of the diff command?

I know that there is a post similar to this : here . I tried using the comp command like it mentioned, but if I have two files, one with data like "abcd" and the other with data "abcde", it just says the files are of different sizes. I wanted to know where exactly they differ. In Unix, the simp...
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What is __gxx_personality_v0 for?

This is a second-hand question from an OS development site, but it made me curious since I couldn't find a decent explanation anywhere. ...
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Good PHP ORM Library?

Is there a good object-relational-mapping library for PHP? 36 Answers 36 ...
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Will iOS launch my app into the background if it was force-quit by the user?

... UPDATE2: You can achieve this using the new PushKit framework, introduced in iOS 8. Though PushKit is used for VoIP. So your usage should be for VoIP related otherwise there is risk of app rejection. (See this answer). UDPDATE1: The documentation h...
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Android Writing Logs to text File

I'm Trying to Write Logs to Custom Log.txt File on Android File using this code of Mine but then this method creates file but contains nothing. Basically I want to read previous contents of the file and then append my data with the existing content. ...
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Where is android studio building my .apk file?

...t that when I try to run the app, I get the message 'Local path doesn't exist.' , where the local path is pointing at the path: AndroidStudioProjects\MyProject\MyProject..\build\production\MyProject.apk , and true enough, there is no .apk file at that location, or indeed anywhere else in the proje...