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Random record from MongoDB
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Do a count of all records, generate a random number between 0 and the count, and then do:
db.yourCollection.find().limit(-1).skip(yourRandomNumber).next()
share
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Matplotlib 2 Subplots, 1 Colorbar
... This may have been obvious to others, but I wanted to point out that in order that the colourbar does accurately represent the colour in all the plots, the vmin and vmax arguments are critical. They control the colour range of each subplot. If you have real data, you may need to do a pass through...
What are the differences between LinearLayout, RelativeLayout, and AbsoluteLayout?
...en, which will be explained below). TableLayout containers do not display border lines for their rows, columns, or cells. Each row has zero or more cells; each cell can hold one View object. The table has as many columns as the row with the most cells. A table can leave cells empty. Cells can span c...
Programmatically change the src of an img tag
...ng an image src (especial when you're using elements that have IDs), you really should try to avoid jQuery, since the call is so much slower than the pure JS call
– Brian Leishman
Apr 8 '15 at 13:36
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I can not find my.cnf on my windows computer [duplicate]
... be called my.ini. MySQL looks for it in the following locations (in this order):
%PROGRAMDATA%\MySQL\MySQL Server 5.7\my.ini, %PROGRAMDATA%\MySQL\MySQL Server 5.7\my.cnf
%WINDIR%\my.ini, %WINDIR%\my.cnf
C:\my.ini, C:\my.cnf
INSTALLDIR\my.ini, INSTALLDIR\my.cnf
See also http://dev.mysql.com/doc...
Failed to load resource: net::ERR_INSECURE_RESPONSE
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In order to add a such rule, you have to get the certificate. If it's yours, you already have it. If don't, click the https left icon on adressbar > certificate informations > details > export. Then, use this file
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Convert an ISO date to the date format yyyy-mm-dd in JavaScript
... I think this is the easiest and most elegant solution from them all but is here any downfall for this?
– Aida_Aida
Mar 14 '17 at 11:04
31
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UIRefreshControl - beginRefreshing not working when UITableViewController is inside UINavigationCont
...e spinner visible. But it wouldn't animate. The one thing I changed is the order of these two methods and everything worked:
[self.tableView setContentOffset:CGPointMake(0, self.tableView.contentOffset.y-self.refreshControl.frame.size.height) animated:YES];
[self.refreshControl beginRefreshing];
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How does Java Garbage Collection work with Circular References?
...e stack of a running thread..." isn't it scanning stacks of all threads in order to not corrupt other thread's data ?
– Alexander Malakhov
Aug 9 '11 at 4:05
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Database Design for Revisions?
...key or clustered key? What key we can add in the Design 1 history table in order to make the search quicker?
– gotqn
Apr 14 '12 at 8:09
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