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What's the $unwind operator in MongoDB?

...oDB employs an "NoSQL" approach to data storage, so perish the thoughts of selects, joins, etc. from your mind. The way that it stores your data is in the form of documents and collections, which allows for a dynamic means of adding and obtaining the data from your storage locations. That being sai...
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How to reload page every 5 seconds?

I am converting one layout to html; once I make the changes in code/html/css, every time I have to hit F5. Is there any simple javascript/jQuery solution for this? I.e. after I add the script, reload the whole page every 5 seconds (or some other specific time). ...
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Cannot use object of type stdClass as array?

... the second parameter of the json_decode(); to true, it will automatically convert the object to an array(); Here are some references: http://php.net/manual/en/function.print-r.php http://php.net/manual/en/function.var-dump.php http://php.net/manual/en/function.var-export.php ...
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Is there a way to list open transactions on SQL Server 2000 database?

... For all databases query sys.sysprocesses SELECT * FROM sys.sysprocesses WHERE open_tran = 1 For the current database use: DBCC OPENTRAN share | improve this ans...
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Update Eclipse with Android development tools v. 23

...3. Step-by-step: Menu Help → Install New Software... For "Work with", select the Android source https://dl-ssl.google.com/android/eclipse Tick ADT v23.0 for installation, then click "Next" Eclipse will show "Install Remediation Page" since there is conflict with previous version. (If it does n...
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How do I use vim registers?

... @dotancohen Technically it's called PRIMARY selection, but I guess "mouse higlight" is easier for people to get :) – kyrias Nov 26 '13 at 16:45 ...
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Removing nan values from an array

... TypeError: only integer scalar arrays can be converted to a scalar index – towry Jun 30 '18 at 14:29 1 ...
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Using semicolon (;) vs plus (+) with exec in find

...+ This variant of the -exec option runs the specified command on the selected files, but the command line is built by appending each selected file name at the end; the total number of invocations of the command will be much less than the number of matched files. The command line is built...
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Request failed: unacceptable content-type: text/html using AFNetworking 2.0

... @Danpe, How to convert above line of code into Swift. I tried with manager.responseSerializer = AFJSONResponseSerializer.serializer() but no use. – Ganesh Guturi Aug 28 '15 at 9:54 ...
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Disable Laravel's Eloquent timestamps

I'm in the process of converting one of our web applications from CodeIgniter to Laravel. However at this moment we don't want to add the updated_at / created_at fields to all of our tables as we have a logging class that does all this in more depth for us already. ...