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How to check if an array field contains a unique value or another array in MongoDB?
I am using mongodb now.
2 Answers
2
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What is thread contention?
...t same lock, thread B will have to wait until thread A releases the lock.
Now, this is platform-specific, but the thread may experience slowdowns even if it never has to wait for the other thread to release the lock! This is because a lock protects some kind of data, and the data itself will often ...
How to detect if a stored procedure already exists
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At least if you drop it you know you have to re-add the permissions. If you ran this sql you would not know whether the sproc had the correct permissions or not as you wouldn't know if you had created it or altered it.
– Liazy
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TypeError: $ is not a function when calling jQuery function
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This should fix it:
jQuery(document).ready(function($){
//you can now use $ as your jQuery object.
var body = $( 'body' );
});
Put simply, WordPress runs their own scripting before you can and they release the $ var so it won't collide with other libraries. This makes total sense, as Wo...
Maven: Failed to read artifact descriptor
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@JacekPrucia good to know that a pom artifact also needs to be installed (if your parent is a pom)
– Adrian
Dec 16 '16 at 0:39
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Can you change a path without reloading the controller in AngularJS?
...ted, but the documentation (docs.angularjs.org/api/ngRoute.$routeProvider) now says: [reloadOnSearch=true] - {boolean=} - reload route when only $location.search() or $location.hash() changes.
– Rhys van der Waerden
Feb 11 '14 at 1:35
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Determine which element the mouse pointer is on top of in JavaScript
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It is well supported now in 2018.
– Boy
Oct 24 '18 at 19:25
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Modern way to filter STL container?
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@gsimard Better now?
– L. F.
Apr 6 at 3:05
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Are C# events synchronous?
... property. And it's merely a Func<int, string>, nothing fancy here.
Now the interesting parts are:
add_OnCall(Func<int, string>)
remove_OnCall(Func<int, string>)
and how OnCall is invoked in Do()
How is Subscribing and Unsubscribing Implemented?
Here's the abbreviated add_OnC...
Regex: Remove lines containing “help”, etc
...and click Mark All
All lines containing the search term are bookmarked.
Now go to the menu Search → Bookmark → Remove Bookmarked lines
Done.
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