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Is there a simple, elegant way to define singletons? [duplicate]

... I don't really see the need, as a module with functions (and not a class) would serve well as a singleton. All its variables would be bound to the module, which could not be instantiated repeatedly anyway. If you do wish to use a cla...
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Run a JAR file from the command line and specify classpath

...n the manifest (I used the Eclipse Export function). My dependencies are all in a directory labeled lib . I can't seem to get a straight answer on how to execute my JAR file while specifying it should use the lib/* as the classpath. ...
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How To Accept a File POST

...rest service. I need to be able to accept POSTed images/files from client applications. Is this possible using the webapi? Below is how action I am currently using. Does anyone know of an example how this should work? ...
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Why am I getting ibtool failed with exit code 255?

All of a sudden I can't build my project. I get the following compiler error: 33 Answers ...
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How to detect reliably Mac OS X, iOS, Linux, Windows in C preprocessor? [duplicate]

... Apple platform" #endif #elif __linux__ // linux #elif __unix__ // all unices not caught above // Unix #elif defined(_POSIX_VERSION) // POSIX #else # error "Unknown compiler" #endif The defined macros depend on the compiler that you are going to use. The _WIN64 #ifdef can be nes...
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Options for embedding Chromium instead of IE WebBrowser control with WPF/C#

...- it's fully open source and frequently updated. It's the only option that allows you to embed the latest version of Chromium. Now that Per Lundberg is actively working on porting CEF 3 to CefSharp, this is the best option for the future. There is also Xilium.CefGlue, but this one provides a low lev...
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Difference between String replace() and replaceAll()

What's the difference between java.lang.String 's replace() and replaceAll() methods, other than later uses regex? For simple substitutions like, replace . with / , is there any difference? ...
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How do I use $scope.$watch and $scope.$apply in AngularJS?

...cycle and $scope First and foremost, AngularJS defines a concept of a so-called digest cycle. This cycle can be considered as a loop, during which AngularJS checks if there are any changes to all the variables watched by all the $scopes. So if you have $scope.myVar defined in your controller and th...
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Error: 10 $digest() iterations reached. Aborting! with dynamic sortby predicate

... Please check this jsFiddle. (The code is basically the same you posted but I use an element instead of the window to bind the scroll events). As far as I can see, there is no problem with the code you posted. The error you mentioned normally occurs when you create a loo...
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How to combine two or more querysets in a Django view?

...sets into a list is the simplest approach. If the database will be hit for all querysets anyway (e.g. because the result needs to be sorted), this won't add further cost. from itertools import chain result_list = list(chain(page_list, article_list, post_list)) Using itertools.chain is faster than...