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Adding a column to an existing table in a Rails migration

I have a Users model which needs an :email column (I forgot to add that column during the initial scaffold). 11 Answers...
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Center Oversized Image in Div

I have been trying to sort out how to center an oversized image within a div using css only. 11 Answers ...
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What's the pythonic way to use getters and setters?

I'm doing it like: 8 Answers 8 ...
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Storyboard warning: prototype table cells must have reuse identifiers

I am getting this warning from storyboard - prototype table cells must have reuse identifiers. 11 Answers ...
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View more than one project/solution in Visual Studio

I am new to visual studio and I am experimenting around with some Windows Services. I have created two solutions and I would like to view both of them at once. Without having to click file->recent projects to switch back and forth. ...
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Is there a way to programmatically scroll a scroll view to a specific edit text?

I have a very long activity with a scrollview. It is a form with various fields that the user must fill in. I have a checkbox half way down my form, and when the user checks it I want to scroll to a specific part of the view. Is there any way to scroll to an EditText object (or any other view object...
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When is the finalize() method called in Java?

I need to know when the finalize() method is called in the JVM . I created a test class which writes into a file when the finalize() method is called by overriding it. It is not executed. Can anybody tell me the reason why it is not executing? ...
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How can I efficiently download a large file using Go?

Is there a way to download a large file using Go that will store the content directly into a file instead of storing it all in memory before writing it to a file? Because the file is so big, storing it all in memory before writing it to a file is going to use up all the memory. ...
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Angularjs - display current date

I got a view in angularjs and I'm just trying to display the current date(formatted). I thought something like <span>{{Date.now() | date:'yyyy-MM-dd'}}</span> should display the current date. ...
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What is Java Servlet?

I read many articles to understand java servlet but I did not succeed. 12 Answers 12 ...