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Difference between a User and a Login in SQL Server

...ly don't mess with. One of them that has me confused is the area of Logins and Users. Seems like it should be a pretty simple topic... ...
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Xcode 5 - “iOS Simulator failed to install application” every time I switch simulators

...t of an application from iOS 7.0 to a release prior to iOS 7.0, building and running the application may fail with the message “iOS Simulator failed to install the application.” Go to the iOS home screen, click and hold the application icon, then tap the hovering “X” button to ...
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CSS :after not adding content to certain elements

I'm having trouble understanding the behavior of the CSS :after property. According to the spec ( here and here ): 3 An...
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What Every Programmer Should Know About Memory?

... fundamental concepts about memory: how CPU cache works, what are physical and virtual memory and how Linux kernel deals that zoo. Probably there are outdated API references in some examples, but it doesn't matter; that won't affect the relevance of the fundamental concepts. So, any book or article...
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How to resolve “You need to have Ruby and Sass installed and in your PATH for this task to work” War

... Ok I got it. I just had to install Sass using gem install sass and now everything is fine...couldn't be easier. share | improve this answer | follow ...
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Android Studio Project Structure (v.s. Eclipse Project Structure)

I'm trying to learn android development and I am initially confused by the different project structures between Eclipse and Android Studio. This makes it difficult to follow tutorials designed for Eclipse. Could anyone let me know why these differences exist? Should they exist? ...
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What is an .inc and why use it?

...at is the meaning of .inc? What it is used for? What are the disadvantages and advantages of using it? 8 Answers ...
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Difference between rake db:migrate db:reset and db:schema:load

The difference between rake db:migrate and rake db:reset is pretty clear in my head. The thing which I don't understand is how rake db:schema:load different from the former two. ...
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Why is it necessary to set the prototype constructor?

....create(Person.prototype); Now what happens when we create a new Student and copy it? var student1 = new Student("trinth"); console.log(student1.copy() instanceof Student); // => false The copy is not an instance of Student. This is because (without explicit checks), we'd have no wa...
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How does this checkbox recaptcha work and how can I use it?

...signed up to the oneplusone website https://account.oneplus.net/sign-up , and noticed this checkbox recaptcha 5 Answers ...