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ContractFilter mismatch at the EndpointDispatcher exception

I have the following scenario that I'm trying to test for: 26 Answers 26 ...
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What is an invariant?

The word seems to get used in a number of contexts. The best I can figure is that they mean a variable that can't change. Isn't that what constants/finals (darn you Java!) are for? ...
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How can I know if a process is running?

When I get a reference to a System.Diagnostics.Process , how can I know if a process is currently running? 13 Answers ...
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How to concatenate stdin and a string?

How to I concatenate stdin to a string, like this? 9 Answers 9 ...
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How can I click a button behind a transparent UIView?

Let's say we have a view controller with one sub view. the subview takes up the center of the screen with 100 px margins on all sides. We then add a bunch of little stuff to click on inside that subview. We are only using the subview to take advantage of the new frame ( x=0, y=0 inside the subview i...
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Android: How to bind spinner to custom object list?

In the user interface there has to be a spinner which contains some names (the names are visible) and each name has its own ID (the IDs are not equal to display sequence). When the user selects the name from the list the variable currentID has to be changed. ...
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All Ruby tests raising: undefined method `authenticate' for nil:NilClass

Most of my tests are raising the following and I don't understand why. All methods call raise the 'authenticate' error. I've checked the code if there was a method called "authenticate" but there is no such method. ...
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How to determine height of UICollectionView with FlowLayout

I've got an UICollectionView with an UICollectionViewFlowLayout , and i want to calculate its content size (for return in intrinsicContentSize needed for adjusting its height via AutoLayout). ...
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Free space in a CMD shell

Is there a way to get the amount of free diskspace of a disk or a folder in a CMD without having to install some thirdparty applications? ...
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How can I reliably get an object's address when operator& is overloaded?

Consider the following program: 5 Answers 5 ...