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Can enums be subclassed to add new elements?
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No, you can't do this in Java. Aside from anything else, d would then presumably be an instance of A (given the normal idea of "extends"), but users who only knew about A wouldn't know about it - which defeats the point of an enum being a well-known set of values.
If you could tell us mor...
How can I stop redis-server?
...server running as a service. If it is running as a stand alone executable, then you will need to explicitly stop the process. Here are the steps I used to stop the process: pkill redis-server on a linux box
– user2932053
Sep 8 '17 at 14:27
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How to comment and uncomment blocks of code in the Office VBA Editor
...t Customise...
Under the Commands tab, select the Edit menu on the left.
Then approximately two thirds of the way down there's two icons, Comment Block and Uncomment Block.
Drag and drop these onto your toolbar and then you have easy access to highlight a block of code, and comment it out and unc...
jQueryUI Tooltips are competing with Twitter Bootstrap
...ry UI and Twitter Bootstrap
$.widget.bridge('uitooltip', $.ui.tooltip);
// Then import bootstrap
<script src="js/bootstrap.js"></script>
Nice copy paste code that also handles the button conflict:
<script type="application/javascript" src="/js/jquery.js"></script>
<scri...
How do I fix a NoSuchMethodError?
...appears when calling a method on objects instantiated by classes you made, then your build process seems to be faulty. Make sure the class files that you are actually running are updated when you compile.
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Cannot import the keyfile 'blah.pfx' - error 'The keyfile may be password protected'
...ce this bug. If any of those users check in their "fix" and I get latest, then my machine is now broken again... and so on. Microsoft have started a trouble ticket on this and assigned it to the VS2010 team and the VSS team.
– JasonD
May 17 '10 at 3:55
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Comparison of full text search engine - Lucene, Sphinx, Postgresql, MySQL?
...Nothing can match Sphinx for speed, so if speed is your number one concern then Sphinx is the option to go for. Nice post
– twigg
Apr 21 '17 at 10:10
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What is the $? (dollar question mark) variable in shell scripting? [duplicate]
...success" return value). If it doesn't exist, you should get a number other then 0. The exact number depends on the program.
For many programs you can find the numbers and their meaning in the corresponding man page. These will usually be described as "exit status" and may have their own section.
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Calling parent class __init__ with multiple inheritance, what's the right way?
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No, they don't. If B's init doesn't call super, then B's init will not be called if we do the super().__init__() approach. If I call A.__init__() and B.__init__() directly, then (if A and B do call super) I get B's init being called multiple times.
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How to restore to a different database in sql server?
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You can create a new db then use the "Restore Wizard" enabling the Overwrite option or;
View the content;
RESTORE FILELISTONLY FROM DISK='c:\your.bak'
note the logical names of the .mdf & .ldf from the results, then;
RESTORE DATABASE MyTemp...