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Select distinct values from a table field

I'm struggling getting my head around the Django's ORM. What I want to do is get a list of distinct values within a field on my table .... the equivalent of one of the following: ...
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Heroku error: “Permission denied (public key)”

I keep getting this error. I am using Mac. I generated a key and added it to heroku using 6 Answers ...
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Align button at the bottom of div using CSS

I want to align my button at the bottom right corner of my div. How can I do that? 4 Answers ...
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How to read data from a zip file without having to unzip the entire file

Is there anyway in .Net (C#) to extract data from a zip file without decompressing the complete file? 6 Answers ...
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What is the logic behind the “using” keyword in C++?

What is the logic behind the "using" keyword in C++? 1 Answer 1 ...
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How to use RSpec's should_raise with any kind of exception?

I'd like to do something like this: 5 Answers 5 ...
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How to specify font attributes for all elements on an html web page?

When I set the font family, font size, color etc. it seems that some nested elements override these with ugly browser defaults. ...
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Switch case with fallthrough?

...he correct syntax of the switch statement with fallthrough cases in Bash (ideally case-insensitive). In PHP I would program it like: ...
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Recommended way to stop a Gradle build

How can I stop a Gradle build after detecting a problem? I can use an assert, throw an exception, do a System.exit (bad idea), or use a dedicated function in Gradle (but I could not find one). What is the best way for Gradle (and why?). ...
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Re-entrant locks in C#

Will the following code result in a deadlock using C# on .NET? 4 Answers 4 ...