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Why catch and rethrow an exception in C#?

...ple, in VB you can do Try .. Catch Ex As MyException When Ex.ErrorCode = 123 .. End Try ...which would not handle MyExceptions with different ErrorCode values. In C# prior to v6, you would have to catch and re-throw the MyException if the ErrorCode was not 123: try { ... } catch(MyExcepti...
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How do I truncate a .NET string?

... Because performance testing is fun: (using linqpad extension methods) var val = string.Concat(Enumerable.Range(0, 50).Select(i => i % 10)); foreach(var limit in new[] { 10, 25, 44, 64 }) new Perf<string> { { "newstring" + limit, n =&...
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What is boxing and unboxing and what are the trade offs?

...xing is the conversion of a reference type into a value type. EX: int i = 123; object o = i;// Boxing int j = (int)o;// UnBoxing Value Types are: int, char and structures, enumerations. Reference Types are: Classes,interfaces,arrays,strings and objects ...
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Regular expression to match numbers with or without commas and decimals in text

... are embedded in other text. IMHO anything that fails to pull 1,234.56 and 1234—and only those numbers—out of abc22 1,234.56 9.9.9.9 def 1234 is a wrong answer. First of all, if you don't need to do this all in one regex, don't. A single regex for two different number formats is hard to maintain...
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How to list only the file names that changed between two commits?

...rex/RexSimplify.java | 50 +++++++++++++++++----- .../apache/calcite/sql/fun/SqlTrimFunction.java | 2 +- .../apache/calcite/sql2rel/SqlToRelConverter.java | 16 +++++++ .../org/apache/calcite/util/SaffronProperties.java | 19 ++++---- .../org/apache/calcite/test/RexProgramTest.java | 24 +...
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Difference between CC, gcc and g++?

.... You have to use alternative compiler names ('acc' IIRC). Similarly, on AIX, the system C compiler goes by names such as 'xlc' or 'xlc32'. Classically, the default system compiler was called 'cc' and self-configuring software falls back on that name when it doesn't know what else to use. POSIX ...
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How to revert (Roll Back) a checkin in TFS 2010

... 123 You have two options for rolling back (reverting) a changeset in Team Foundation Server 2010 V...
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Why is SQL Server 2008 Management Studio Intellisense not working?

...I found SqlComplete. http://www.devart.com/dbforge/sql/sqlcomplete/?gclid=CN2xs_Lw7akCFcYZHAodpicXXw There is a free version which does the basics, and the full version is only $50! I'm a database architect, and while I can remember the commands, auto complete saves me heaps of time. If you're s...
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What is the meaning of “POSIX”?

...irst Apple POSIX system, released circa 2001. See also: Is OSX a POSIX OS? AIX (IBM) HP-UX (HP) Solaris (Oracle) Most Linux distros are very compliant, but not certified because they don't want to pay the compliance check. Inspur's K-UX and Huawei's EulerOS are two certified examples. The officia...
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Download Github pull request as unified diff

... Somewhat related, to let git download pull request 123 and patch it into mylocalbranch locally, run: git checkout -b mylocalbranch git pull origin pull/921/head share | imp...