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Do try/catch blocks hurt performance when exceptions are not thrown?

... { Console.WriteLine(ex.ToString()); } finally { d = Math.Sin(d); } } w.Stop(); Console.Write(" try/catch/finally: "); Console.WriteLine(w.ElapsedMilliseconds); w.Reset(); d = 0; w.Start(); for (int i = ...
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How can you make a custom keyboard in Android?

... First of all you will need a keyboard.xml file which will be placed in the res/xml folder (if the folder does not exist, created it). <?xml version="1.0" encoding="utf-8"?> <Keyboard xmlns:android="http://schemas.android.com...
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List comprehension rebinds names even after scope of comprehension. Is this right?

...list comprehensions blindingly fast, and while it was not a common pitfall for beginners, it definitely stung people occasionally. For generator expressions we could not do this. Generator expressions are implemented using generators, whose execution requires a separate execution fra...
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What is a handle in C++?

I have been told that a handle is sort of a pointer, but not, and that it allows you to keep a reference to an object, rather than the object itself. What is a more elaborate explanation? ...
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Clone contents of a GitHub repository (without the folder itself)

...n GitHub . When I git clone (git@github:me/name.git...) I get a folder called name/ and inside name I have my contents... How do I get JUST the contents? ...
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What is the most efficient way to store tags in a database?

... Actually I believe de-normalising the tags table might be a better way forward, depending on scale. This way, the tags table simply has tagid, itemid, tagname. You'll get duplicate tagnames, but it makes adding/removing/editing...
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What is the GAC in .NET?

... Right, so basically it's a way to keep DLLs globally accessible without worrying about conflicts. No more DLL Hell. Each architecture and version gets it's own place to live. It also gets it own way to browse it in Explorer, so if you go...
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python: How do I know what type of exception occurred?

I have a function called by the main program: 15 Answers 15 ...
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PDOException “could not find driver”

... Note that, for those using Apache or other web server, one needs to restart Apache for the changes to take effect: sudo systemctl restart httpd.service – Mugoma J. Okomba Aug 31 '16 at 5:31 ...
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How to print to console in pytest?

... Using -s option will print output of all functions, which may be too much. If you need particular output, the doc page you mentioned offers few suggestions: Insert assert False, "dumb assert to make PyTest print my stuff" at the end of your function, and you...