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Singleton: How should it be used

...t; "hello world\n"; Of course not. We don't need protection against this error, because that kind of error just doesn't happen. If it does, the correct response is to go home and sleep for 12-20 hours and hope you feel better. If only one object is needed, simply create one instance. If one objec...
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Using ZXing to create an Android barcode scanning app [duplicate]

..." and paste to your project. Clean and build project. If your project show error about "switch - case", you should change them to "if - else". Completed. Clean and build project. You can click on "Proprties" > "Android" > click on "Is Libraries" to use for your project. ...
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How to add parameters to a HTTP GET request in Android?

...ic void whenSuccess(ResponseHendler<YourResponseType> rh){ LOGGER.error("Status code: " + rh.getStatusCode() + ", Error msg: " + rh.getErrorText()); } Note: There are many useful methods to manipulate your response. ...
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What is the $$hashKey added to my JSON.stringify result

... was then rendered by an ng-repeat. I was getting angular 'duplicate key' errors when using JSON.parse(JSON.stringify(obj)) to clone my element. Using JSON.parse(angular.toJson(obj)); fixed things. Thanks! – SAL Nov 16 '16 at 15:17 ...
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Do NSUserDefaults persist through an Update to an app in the Appstore?

Is this the case? Do NSUserDefaults get reset when you submit an update to an app on the App Store, or are they reset? 6 An...
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Returning value from called function in a shell script

...nuelJordan, Functions can only return exit codes and >&2 logs to stderror, so, the last echo is written to stdout, so, the calling function ONLY captures stdout and not stderr. Assuming execution is single threaded, a better option is to maintain a custom variable specific like TEST_LOCK_STAT...
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Why does HTML think “chucknorris” is a color?

... A hidden opportunity for semantics? You could make some error pages with this: <body bgcolor=error><h1 style=text-align:center>Error: Not Found<h1></span> You could add a div with anothe background or something like that, so it is not that aesthetically sho...
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How to get the nvidia driver version from the command line?

... In my centos 6.4 system, it gives me error as "-bash: nvidia-smi: command not found". What might be the problem ? – Shyamkkhadka Mar 5 '17 at 10:03 ...
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How can I setup & run PhantomJS on Ubuntu?

... I ran into this issue: bin/phantomjs: error while loading shared libraries: libfontconfig.so.1: cannot open shared object file: No such file or directory. I found a fix here. Run the command: sudo apt-get install libfontconfig – Neil Hoff ...
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Simple insecure two-way data “obfuscation”?

I'm looking for very simple obfuscation (like encrypt and decrypt but not necessarily secure) functionality for some data. It's not mission critical. I need something to keep honest people honest, but something a little stronger than ROT13 or Base64 . ...