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How do I create an abstract base class in JavaScript?

...imal = function() { if (this.constructor === Animal) { throw new Error("Can't instantiate abstract class!"); } // Animal initialization... }; /** @abstract */ Animal.prototype.say = function() { throw new Error("Abstract method!"); } The Animal "class" and the say method a...
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how can I add the aidl file to Android studio (from the in-app billing example)

... Just as the error message says, you need to put IInAppBillingService.aidl in the correct directory dictated by it's package (com.android.vending.billing). Within the src/main/aidl/ folder you already have, put the .aidl file in com/andr...
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Try catch statements in C

... You use goto in C for similar error handling situations. That is the closest equivalent of exceptions you can get in C. share | improve this answer ...
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How to log something in Rails in an independent log file?

...initializer: MultiLogger.add_logger('post') and call Rails.logger.post.error('hi') # or call logger.post.error('hi') if it is accessible. and you are done. If you want to code it yourself, see below: A more complete solution would be to place the following in your lib/ or config/initialize...
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NoClassDefFoundError - Eclipse and Android

...g fine. Since having added the scoreninja jar, I now get a NoClassDefFoundError when I try to run the app. 27 Answers ...
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Android: failed to convert @drawable/picture into a drawable

...xact same size in the same folder, and try to reference it, is flags up an error "Failed to convert @drawable/picture into a drawable" . I have tried the same image with a different name and it just keeps giving me that error. I have also tried it in a different XML layout and the same thing. Also ...
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How to solve the error LNK2019: unresolved external symbol - function?

I get this error, but I don't know how to fix it. 11 Answers 11 ...
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Error deploying ClickOnce application - Reference in the manifest does not match the identity of the

...a ClickOnce application, but installation fails on the client. Here's the error log: 20 Answers ...
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How to validate inputs dynamically created using ng-repeat, ng-show (angular)

... AngularJS relies on input names to expose validation errors. Unfortunately, as of today, it is not possible (without using a custom directive) to dynamically generate a name of an input. Indeed, checking input docs we can see that the name attribute accepts a string only. To ...
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Resolve build errors due to circular dependency amongst classes

...n find myself in a situation where I am facing multiple compilation/linker errors in a C++ project due to some bad design decisions (made by someone else :) ) which lead to circular dependencies between C++ classes in different header files (can happen also in the same file) . But fortunately(?) th...