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Pushing app to heroku problem

... For all the people who this does not work, check your ~/.heroku/credentials If the email or token does not match the account, you won't see your apps. sh...
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How do I change the background color of a plot made with ggplot2

...s the theme_bw, giving you a white background and grey gridlines. I use it all the time, as in print it looks much better than the default grey background: myplot + theme_bw() – ROLO Dec 16 '11 at 9:11 ...
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Remove columns from DataTable in C#

... which I get a DataTable from that I am being passed back from a function call. It has 15-20 columns, however I only want 10 columns of the data. ...
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How to export revision history from mercurial or git to cvs?

...en we finish or maybe every once in a while we want to commit our code and all of our revision history to cvs. We don't have write access to the project's cvs repo so we can't commit very frequently. What tool can we use to export our revision history to cvs? Currently we were thinking of using git ...
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What is the difference between Unidirectional and Bidirectional JPA and Hibernate associations?

...s, so that you can access the other side without explicit queries. Also it allows you to apply cascading options to both directions. Note that navigational access is not always good, especially for "one-to-very-many" and "many-to-very-many" relationships. Imagine a Group that contains thousands of ...
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How to set response filename without forcing “save as” dialog

...t tested in IE 6, IE 8, modern Chrome, and modern Firefox, and it works in all of them; as far as I can tell, it's totally safe to use this nowadays. – Mark Amery Jun 1 '14 at 18:35 ...
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Difference between 'self' and 'total' in Chrome CPU Profile of JS

...otal is how much time was spent in that function, and in the functions it called. share | improve this answer | follow | ...
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Why is not in HTML 5 Tag list while is?

Shouldn't both be removed? Or does it mean we should use <small> ? Why is <big> removed but <small> is not? What is the problem with <big> which does not apply to <small> ? ...
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How do I simulate a low bandwidth, high latency environment?

... Jon ColversonJon Colverson 2,54811 gold badge2020 silver badges2121 bronze badges ...
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Difference between Big-O and Little-O Notation

... f ∈ O(g) says, essentially For at least one choice of a constant k > 0, you can find a constant a such that the inequality 0 <= f(x) <= k g(x) holds for all x > a. Note that O(g) is the set of all functions for which this condit...