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in entity framework code first, how to use KeyAttribute on multiple columns

I'm creating a POCO model to use with entity framework code first CTP5. I'm using the decoration to make a property map to a PK column. But how can I define a PK on more then one column, and specifically, how can I control order of the columns in the index? Is it a result of the order of propert...
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What is the difference between `after_create` and `after_save` and when to use which?

Are after_create and after_save the same as per functionality? 3 Answers 3 ...
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Python Mocking a function from an imported module

I want to understand how to @patch a function from an imported module. 2 Answers 2 ...
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Difference between $state.transitionTo() and $state.go() in Angular ui-router

...metimes we use $state.transitionTo() and sometimes we use $state.go() . Can anyone tell me how they differ and when one should be used over the other? ...
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why does DateTime.ToString(“dd/MM/yyyy”) give me dd-MM-yyyy?

I want my datetime to be converted to a string that is in format "dd/MM/yyyy" 5 Answers ...
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How do I update if exists, insert if not (AKA “upsert” or “merge”) in MySQL?

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How to delete (not cut) in Vim?

How can I delete a line without putting it into my default buffer? 6 Answers 6 ...
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Angular.js: How does $eval work and why is it different from vanilla eval?

I was curious about the $scope.$eval you so often see in directives, so I checked out the source and found the following in rootScope.js : ...
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How do I list all loaded assemblies?

... AppDomains. Doing it for my program's AppDomain is easy enough AppDomain.CurrentDomain.GetAssemblies() . Do I need to somehow access every AppDomain? Or is there already a tool that does this? ...
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What is the 'page lifecycle' of an ASP.NET MVC page, compared to ASP.NET WebForms?

What is the 'page lifecycle' of an ASP.NET MVC page, compared to ASP.NET WebForms? 1 Answer ...