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Best way to check if object exists in Entity Framework?

What is the best way to check if an object exists in the database from a performance point of view? I'm using Entity Framework 1.0 (ASP.NET 3.5 SP1). ...
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Java and SQLite [closed]

I'm attracted to the neatness that a single file database provides. What driver/connector library is out there to connect and use SQLite with Java. ...
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Do you debug C++ code in Vim? How? [closed]

The question is to all you people, who use Vim to develop C++ applications. 9 Answers ...
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How to implement a Map with multiple keys? [duplicate]

I need a data structure which behaves like a Map, but uses multiple (differently-typed) keys to access its values. (Let's not be too general, let's say two keys) ...
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Can an html element have multiple ids?

I understand that an id must be unique within an HTML/XHTML page. 18 Answers 18 ...
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No route matches “/users/sign_out” devise rails 3

I've installed devise on my app and applied the following in my application.html.erb file: 29 Answers ...
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What is Express.js?

I am a learner in Node.js . 8 Answers 8 ...
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Why is vertical-align: middle not working on my span or div?

I'm trying to vertically center a span or div element within another div element. However when I put vertical-align: middle , nothing happens. I've tried changing the display properties of both elements, and nothing seems to work. ...
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AngularJS - How to use $routeParams in generating the templateUrl?

Our application has 2-level navigating. We want to use AngularJS $routeProvider to dynamically provide templates to an <ng-view /> . I was thinking of doing something along the lines of this: ...