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Is the != check thread safe?

...ticular machine and a particular Java implementation, does not preclude it from happening in other circumstances. Does this mean that a != a could return true. Yes, in theory, under certain circumstances. Alternatively, a != a could return false even though a was changing simultaneously. C...
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Simple Getter/Setter comments

...dding noise to your code for the sake of silencing overly pedantic warning from our tools feels wrong to me. If it doesn't add value to a programmer, then the right solution would be to turn down/fix the verbosity of the tools and/or ease up on how much we care about jumping through hoops so that th...
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Android Studio rendering problems

... I was able to fix this in Android Studio 0.2.0 by changing API from API 18: Android 4.3 to API 17: Android 4.2.2 This is under the Android icon menu in the top right of the design window. This was a solution from http://www.hankcs.com/program/mobiledev/idea-this-version-of-the-render...
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Windows XP or later Windows: How can I run a batch file in the background with no window displayed?

...u can use start /b second.bat to launch a second batch file asynchronously from your first that shares your first one's window. If both batch files write to the console simultaneously, the output will be overlapped and probably indecipherable. Also, you'll want to put an exit command at the end of...
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ASP.NET MVC - Find Absolute Path to the App_Data folder from Controller

What is the correct way to find the absolute path to the App_Data folder from a Controller in an ASP.NET MVC project? I'd like to be able to temporarily work with an .xml file and I don't want to hardcode the path. ...
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Call UrlHelper in models in ASP.NET MVC

...ference of the current HttpContext HttpContext.Current which is derived from System.Web. Therefore, the following will work anywhere in an ASP.NET MVC application: UrlHelper url = new UrlHelper(HttpContext.Current.Request.RequestContext); url.Action("ContactUs"); // Will output the proper link a...
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Declaration/definition of variables locations in ObjectiveC?

...u were able to access these variables only in your implementation, but not from other classes. To do that, you had to declare accessor methods, that look something like this: // MyClass.h @interface MyClass : NSObject { int myVar; } - (int)myVar; - (void)setMyVar:(int)newVar; @end // MyClas...
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Why do we need Abstract factory design pattern?

...ery one of the linked answers; so this list is NOT a representative sample from the SO community. – jaco0646 Jul 16 '16 at 14:24 1 ...
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What is the equivalent of MATLAB's repmat in NumPy

...n the direction of columns, rows and out-of-plane dimension are being read from right to left. The resulting object has a different shape from Matlab. One can no longer assert that repmat and tile are equivalent instructions. In order to get tile to behave like repmat, in Python one has to make s...
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How to make a SIMPLE C++ Makefile

...t commands need to be executed in what order to take your software project from a collection of source files, object files, libraries, headers, etc., etc.---some of which may have changed recently---and turning them into a correct up-to-date version of the program. Actually, you can use Make for ot...