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MongoDB SELECT COUNT GROUP BY

... pls help if you can for related questions in mongoDB - stackoverflow.com/questions/61067856/… – newdeveloper Apr 7 at 1:48 add a comment  |  ...
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How does delete[] know it's an array?

... The compiler doesn't know it's an array, it's trusting the programmer. Deleting a pointer to a single int with delete [] would result in undefined behavior. Your second main() example is unsafe, even if it doesn't immediately c...
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Mongod complains that there is no /data/db folder

...eed to use sudo , e.g. sudo mkdir -p /data/db Or you need to do su - to become superuser, and then create the directory with mkdir -p /data/db Note: MongoDB also has an option where you can create the data directory in another location, but that's generally not a good idea, because it just sli...
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character showing up in files. How to remove them?

I am doing compressing of JavaScript files and the compressor is complaining that my files have  character in them. ...
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Why does C# not provide the C++ style 'friend' keyword? [closed]

...d would like to use it in C# too. But I bet because of C#'s "pure" OOness (compared to C++'s pseudo OOness) MS decided that because Java has no friend keyword C# shouldn't either (just kidding ;)) On a serious note: internal is not as good as friend but it does get the job done. Remember that it is...
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How do I call some blocking method with a timeout in Java?

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How to delete a whole folder and content?

...er. You can delete its contents by using the method below: Updated as per comments File dir = new File(Environment.getExternalStorageDirectory()+"Dir_name_here"); if (dir.isDirectory()) { String[] children = dir.list(); for (int i = 0; i < children.length; i++) { new File(d...
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TypeError: p.easing[this.easing] is not a function

... am including this file from a CDN: <script src='http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.5/jquery-ui.min.js'></script> Is it this one ? Or shall i include another file? – Malloc Sep 25 '12 at 23:02 ...
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What good technology podcasts are out there?

... community wiki 3 revsBrad Tutterow ...
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In Vim is there a way to delete without putting text in the register?

... At first I thought this command was not working properly. Then I realized I was using a "dead keys" version of the american keyboard. With this keyboard layout I have to type "<space>_d. The space is needed to actually type the ". ...