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Why am I getting an Exception with the message “Invalid setup on a non-virtual (overridable in VB) m

...of the fake implementation you would need to check the boundary conditions etc. In theory, yes, you could mock a fake implementation. But practically it sounds like a code smell. – Amol Feb 21 '17 at 6:38 ...
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ASP.NET MVC View Engine Comparison

...lisense Compiled views Extensibility using regular CLR classes, functions, etc Seamless composability and manipulation since it's regular VB.NET code Unit testable Cons: Performance: Builds the whole DOM before sending it to client. Example: Protected Overrides Function Body() As XElement ...
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Regex to check whether a string contains only numbers [duplicate]

... True. It also doesn't handle real numbers, complex numbers, quaternions, etc. The question related to counting numbers and so does my answer. – Mike Samuel May 27 '15 at 16:59 ...
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How do I programmatically determine operating system in Java?

...ix() // and so on } That way, every time you ask for the Os, you do not fetch the property more than once in the lifetime of your application. February 2016: 7+ years later: There is a bug with Windows 10 (which did not exist at the time of the original answer). See "Java's “os.name” for W...
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PHP exec() vs system() vs passthru()

...ge benefit. It will let you execute scripts/programs such as vim, dialog, etc, letting those programs handle control and returning to your script only when they are done. If you use system() or exec() to execute those scripts/programs, it simply won't work. Gotcha: For some reason, you can't exec...
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Accessing UI (Main) Thread safely in WPF

...l46kok This can have different reasons (console app, hosting from winforms etc.). As @WolfgangZiegler said, you can use any UIElement for it. I just usually use Application.Current for it since it looks cleaner to me. – Botz3000 Jul 24 '12 at 6:51 ...
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Can table columns with a Foreign Key be NULL?

...record containing NULL foreign keys only applies to string types (varchar, etc), because otherwise an empty string can be passed as default. This is the case with MySQL, and results in an integrity error on update. – CodeMantle Mar 21 at 8:28 ...
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Set default CRAN mirror permanent in R

...tilde expansion). If this variable is unset, the default is R_HOME/etc/Rprofile.site, which is used if it exists (which it does not in a 'factory-fresh' installation). So do Sys.getenv("R_PROFILE") for the first option, or Sys.getenv("R_HOME") or R.home() for the second option. On m...
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error: Unable to find vcvarsall.bat

...nt into the session (i.e. environment variables, the path to the compiler, etc). Execute: 32-bit Compilers: Note: 32-bit Windows installs will only have C:\Program Files\ as expected "C:\Program Files (x86)\Microsoft Visual Studio 9.0\Common7\Tools\vsvars32.bat" 64-bit Compilers: ...
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What's the “average” requests per second for a production web application?

...y make per second c. the number of additional requests (i.e. ajax calls, etc) As to what is considered fast.. do you mean how few requests a site can take? Or if a piece of hardware is considered fast if it can process xyz # of requests per second? ...