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MongoDB/NoSQL: Keeping Document Change History

... changes to one or more specific entities in a database. I've heard this called row versioning, a log table or a history table (I'm sure there are other names for it). There are a number of ways to approach it in an RDBMS--you can write all changes from all source tables to a single table (more of...
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Error during installing HAXM, VT-X not working

... appropriate file HAXM file for Windows 7 64 bit, unpacked and started installing. However, during the installation process I get this error: ...
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How to fix: android.app.RemoteServiceException: Bad notification posted from package *: Couldn't cre

...nteger reference and the pending intent going off, the app was updated and all of the drawable references changed. The integer that used to reference the correct drawable now referenced either the incorrect drawable or none at all (none at all - causing this crash) ...
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How to select the first element in the dropdown using jquery?

I want to know how to select the first option in all select tags on my page using jquery. 9 Answers ...
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Which would be better for concurrent tasks on node.js? Fibers? Web-workers? or Threads?

...e to use is a confusion and one of them definitely needs to be used - afterall what's the purpose of having a server which is just good at IO and nothing else? Suggestions needed! ...
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Visual Studio window which shows list of methods

...io, is there a window which shows list of methods in the active class? A small window like the Solution Explorer would be great. In Eclipse, there is one. ...
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Are Databases and Functional Programming at odds?

... First of all, I would not say that CLOS (Common Lisp Object System) is "pseudo-OO". It is first class OO. Second, I believe that you should use the paradigm that fits your needs. You cannot statelessly store data, while a function ...
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How to reverse apply a stash?

I have a small patch saved away in my git stash. I've applied it to my working copy using git stash apply . Now, I'd like to back out those changes by reverse applying the patch (kind of like what git revert would do but against the stash). ...
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How to get the first element of an array?

...code. It simply shows undefined, since that's the value of a[0], which actually is the first item in the array. If you want it to show foo you should skip all undefined values but it wouldn't be the first item in the array. – Michiel van der Blonk Sep 6 '16 at ...
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How to tag an older commit in Git?

...epository, but we've made commits since then. A tag at the beginning would allow us to "roll back" production to a known, stable state. ...