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Why does .NET foreach loop throw NullRefException when collection is null?

So I frequently run into this situation... where Do.Something(...) returns a null collection, like so: 11 Answers ...
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How to use Global Variables in C#?

How do I declare a variable so that every class (*.cs) can access its content, without an instance reference? 4 Answers ...
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Good examples using java.util.logging [closed]

... java.util.logging keeps you from having to tote one more jar file around with your application, and it works well with a good Formatter. In general, at the top of every class, you should have: private static final Logger LOGGER = Logger.getLogger( ClassName.class.getName() ); Then, you can ju...
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How can I tell if a DOM element is visible in the current viewport?

...follow | edited Jan 31 at 11:38 Peter Mortensen 26.5k2121 gold badges9292 silver badges122122 bronze badges ...
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How to handle checkboxes in ASP.NET MVC forms?

...e false" values you're seeing for each form element. Try this, which definitely works on ASP.NET MVC Beta because I've just tried it. Put this in the view instead of using Html.CheckBox(): <% using (Html.BeginForm("ShowData", "Home")) { %> <% foreach (var o in ViewData.Model) { %> ...
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How to check if two arrays are equal with JavaScript? [duplicate]

...follow | edited Jun 18 at 21:49 C. Tewalt 2,02322 gold badges2323 silver badges4242 bronze badges ...
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How to set the margin or padding as percentage of height of parent container?

...ide another, and in the inner div, use something like top:50% (remember position matters if it still doesn't work) share | improve this answer | follow | ...
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What is the difference between iterator and iterable and how to use them?

I am new in Java and I'm really confused with iterator and iterable. Can anyone explain to me and give some examples? 13 An...
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What is the JSF resource library for and how should it be used?

... how should this be used? There are a lot of examples on the web which use it as follows with the common content/file type css , js and img (or image ) as library name depending on the tag used: ...
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How do i create an InstallShield LE project to install a windows service?

I downloaded Visual Studio 2012 yesterday when it was released on MSDN. I have noticed that a few of the project types that we had in 2010 are gone or different. The biggest difference for me right now is the removal of the Windows Installer project. Now we are being forced to use the InstallShield...