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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 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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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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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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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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VBoxManage: error: Failed to create the host-only adapter

... virtual box 4.3 on fedora 17 machine. When I do "vagrant up", I get this error: 32 Answers ...
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How to fix error “Updating Maven Project”. Unsupported IClasspathEntry kind=4?

... the project. When m2e encounters a "var" .classpath entry, it throws this error. The update sites are specified at the following url: http://eclipse.org/m2e/m2e-downloads.html If you can't use m2e 1.5.0 for any reason, then : Disable the maven nature for the project (via the right-click menu...
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ERROR 1130 (HY000): Host '' is not allowed to connect to this MySQL server [duplicate]

...06 to any firewall you may be running (although this will give a different error message) hope this helps someone... share | improve this answer | follow | ...
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Git error on commit after merge - fatal: cannot do a partial commit during a merge

... For noobs like myself, you will also get this same error if you try a message that includes spaces without quotes. Eg. [git commit -m one two three] Correct: [git commit -m "one two three"] – Skychan Jun 20 '18 at 21:23 ...