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Are Exceptions in C++ really slow

I was watching Systematic Error Handling in C++—Andrei Alexandrescu he claims that Exceptions in C++ are very very slow. ...
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What are valid values for the id attribute in HTML?

... For HTML 4, the answer is technically: ID and NAME tokens must begin with a letter ([A-Za-z]) and may be followed by any number of letters, digits ([0-9]), hyphens ("-"), underscores ("_"), colons (":"), and periods ("."). HTML 5 is even more permissive, saying onl...
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How do JavaScript closures work?

...nowledge of the concepts they consist of (for example functions, variables and the like), but does not understand closures themselves? ...
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Difference between scaling horizontally and vertically for databases [closed]

I have come across many NoSQL databases and SQL databases. There are varying parameters to measure the strength and weaknesses of these databases and scalability is one of them. What is the difference between horizontally and vertically scaling these databases? ...
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AutoMapper vs ValueInjecter [closed]

...ueInjecter, I can tell you that I did it because I wanted something simple and very flexible I really don't like writing much or writing lots of monkey code like: Prop1.Ignore, Prop2.Ignore etc. CreateMap<Foo,Bar>(); CreateMap<Tomato, Potato>(); etc. ValueInjecter is something like ...
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Is there a way to automatically generate getters and setters in Eclipse?

I am working on a new Android project ( Java ), and created an Object with a large number of variables. Since I am planning to add getters and setters for all of them, I was wondering: is there a shortcut in Eclipse for automatically generating the getters and setters in a given class? ...
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How is the fork/join framework better than a thread pool?

...in the beginning, sending them to a cached thread pool (from Executors ) and waiting for each task to complete? I fail to see how using the fork/join abstraction simplifies the problem or makes the solution more efficient from what we've had for years now. ...
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Difference between require, include, require_once and include_once?

... There are require and include_once as well. So your question should be... When should I use require vs. include? When should I use require_once vs. require The answer to 1 is described here. The require() function is identical to inc...
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Embedding ads on Android app?

I would like to make a free version of the Android app I have, but would like to embed ad on it. I am not sure where I should start? Is there a well known mobile ad company out there that is specialized in mobile advertising? ...
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Why do we need entity objects? [closed]

... think it comes down to how complicated the "logic" of the application is, and where you have implemented it. If all your logic is in stored procedures, and all your application does is call those procedures and display the results, then developing entity objects is indeed a waste of time. But for...