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آیا Null یک نوع دادهایی است؟
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NuGet 2.0 منتشر شد
درهر حالتی اگه شما بخواین نسخه ای از نوگت رو به روز رسانی بکنین یکسری خطاهایی ممکنه به وجود بیاد. البته ظاهرا این مشکل نوگت نیست (^ و ^) بلکه به یه ایرادهای خاص در Visual Studio Extension manager بر میگرده (^ و ^) : Hotfix و یا این مورد:
Attempting to install or uninstall results in the error "Cannot create a file when that file already exists.” For some reason, Visual Studio extensions can get in a weird state where you've uninstalled the VSIX extension, but some files were left behind. To work around this issue: 1. Exit Visual Studio 2. Open the following folder (it might be on a different drive on your machine) C:\Program Files (x86)\Microsoft Visual Studio 10.0\Common7\IDE\Extensions\Microsoft Corporation\NuGet Package Manager\<version>\ 3. Delete all the files with the .deleteme extensions. 4. Re-open Visual Studio After following these steps, you should be able to continue.
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مقایسهای بین typescript و flowtype
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همه چیز درباره الگوی طراحی Singleton
Singleton design pattern is one of the simplest design patterns: it involves only one class throughout the application which is responsible to instantiate itself, to make sure it creates not more than one instance; in the same time it provides a global point of access to that instance. In this case the same instance can be used from everywhere, being impossible to invoke directly the constructor each time.
you can Mock the DbSet and even use a nice Nuget’s package called FakeDbSet which has a InMemoryDbSet.
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