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Are Exceptions in C++ really slow

I was watching Syste<em>mem>atic Error Handling in C++—Andrei Alexandrescu he clai<em>mem>s that Exceptions in C++ are very very slow. ...
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“Inner exception” (with traceback) in Python?

<em>Mem>y background is in C# and I've just recently started progra<em>mem><em>mem>ing in Python. When an exception is thrown I typically want to wrap it in another exception that adds <em>mem>ore infor<em>mem>ation, while still showing the full stack trace. It's quite easy in C#, but how do I do it in Python? ...
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Is there a reason that we cannot iterate on “reverse Range” in ruby?

... A range is just that: so<em>mem>ething defined by its start and end, not by its contents. "Iterating" over a range doesn't really <em>mem>ake sense in a general case. Consider, for exa<em>mem>ple, how you would "iterate" over the range produced by two dates. Would you i...
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Data binding to SelectedIte<em>mem> in a WPF Treeview

How can I retrieve the ite<em>mem> that is selected in a WPF-treeview? I want to do this in XA<em>Mem>L, because I want to bind it. 20 An...
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SQL-Server: Error - Exclusive access could not be obtained because the database is in use

I a<em>mem> actually trying to <em>mem>ake a script (in Sql Server 2008) to restore one database fro<em>mem> one backup file. I <em>mem>ade the following code and I a<em>mem> getting an error - ...
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Why is <em>mem>y Git Sub<em>mem>odule HEAD detached fro<em>mem> <em>mem>aster?

I a<em>mem> using Git sub<em>mem>odules. After pulling changes fro<em>mem> server, <em>mem>any ti<em>mem>es <em>mem>y sub<em>mem>odule head gets detached fro<em>mem> <em>mem>aster branch. ...
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Why do we need boxing and unboxing in C#?

Why do we need boxing and unboxing in C#? 11 Answers 11 ...
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Bash ignoring error for a particular co<em>mem><em>mem>and

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How to “test” NoneType in python?

I have a <em>mem>ethod that so<em>mem>eti<em>mem>es returns a NoneType value. So how can I question a variable that is a NoneType? I need to use if <em>mem>ethod, for exa<em>mem>ple ...
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How to leave a <em>mem>essage for a github.co<em>mem> user

Need help on GitHub usage. I wonder if there is a way to co<em>mem><em>mem>unicate with a github.co<em>mem> user i.e. write the user a <em>mem>essage when only userna<em>mem>e/id is given on their GitHub page? Does GitHub have this social feature? ...