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Unable to update the EntitySet - because it has a DefiningQuery and no element exis

...pdate in the Entity Framework designer (or alternatively delete the entity and then add it) before you stop getting the error. share | improve this answer | follow ...
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I can’t find the Android keytool

I am trying to follow the Android mapping tutorial and got to this part where I had to get an API key . 10 Answers ...
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In Python, when should I use a function instead of a method?

...nt "can't kill it." Moving away from this analogy, why do we use methods and classes? Because we want to contain data and hopefully structure our code in a manner such that it will be reusable and extensible in the future. This brings us to the notion of encapsulation which is so dear to OO design...
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What is the difference between a Docker image and a container?

...en using Docker, we start with a base image. We boot it up, create changes and those changes are saved in layers forming another image. ...
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What's the point of Spring MVC's DelegatingFilterProxy?

...ds a bean ("target bean" or "delegate") in your Spring application context and invokes it. How is it possible? Because this bean implements javax.servlet.Filter, its doFilter method is called. Which bean is called? the DelegatingFilterProxy "Supports a "targetBeanName" [...], specifying the name of...
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Error during installing HAXM, VT-X not working

I am an entry-level Android software developer. I recently heard about HAXM that support emulator in rendering graphics more smoothly. I downloaded appropriate file HAXM file for Windows 7 64 bit, unpacked and started installing. However, during the installation process I get this error: ...
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When do you use the Bridge Pattern? How is it different from Adapter pattern?

...ttern Wikipedia entry). The Bridge pattern is a composite of the Template and Strategy patterns. It is a common view some aspects of the Adapter pattern in the Bridge pattern. However, to quote from this article: At first sight, the Bridge pattern looks a lot like the Adapter pattern in that ...
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What is the difference between “long”, “long long”, “long int”, and “long long int” in C++?

I am transitioning from Java to C++ and have some questions about the long data type. In Java, to hold an integer greater than 2 32 , you would simply write long x; . However, in C++, it seems that long is both a data type and a modifier. ...
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Architecture of a single-page JavaScript web application?

...application in terms of its model objects, UI components, any controllers, and objects handling server persistence. 14 Answ...
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Grouping functions (tapply, by, aggregate) and the *apply family

...ed by the extremely popular plyr package, the base functions remain useful and worth knowing. This answer is intended to act as a sort of signpost for new useRs to help direct them to the correct *apply function for their particular problem. Note, this is not intended to simply regurgitate or repla...