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Reorder bars in geom_bar ggplot2

...a bar-plot where the plot is ordered from the miRNA with the highest value to the miRNA with the lowest. Why does my code not work? ...
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Maximum MIMEType Length when storing type in DB

What are people using as the length of a MIMEType field in their databases? The longest one we've seen so far is 72 bytes: ...
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How would one call std::forward on all arguments in a variadic function?

I was just writing a generic object factory and using the boost preprocessor meta-library to make a variadic template (using 2010 and it doesn't support them). My function uses rval references and std::forward to do perfect forwarding and it got me thinking...when C++0X comes out and I had a stand...
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What is float in Java?

... In Java, when you type a decimal number as 3.6, its interpreted as a double. double is a 64-bit precision IEEE 754 floating point, while floatis a 32-bit precision IEEE 754 floating point. As a float is less precise than a double, the conve...
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MongoDB aggregation framework match OR

... $match: { $or: [{ author: 'dave' }, { author: 'john' }] } Like so, since the $match operator just takes what you would normally put into the find() function share ...
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How to create index on JSON field in Postgres?

...reSQL 9.3 Beta 2 (?), how do I create an index on a JSON field? I tried it using the -> operator used for hstore but got the following error: ...
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Is it possible to pull just one file in Git?

I am working on a Git branch that has some broken tests, and I would like to pull (merge changes, not just overwrite) these tests from another branch where they are already fixed. ...
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What is RPC framework and Apache Thrift?

I need to learn Apache Thrift for a University project. As this tutorial says, it is an RPC framework, and it was the only document I could find for Thrift other than their documentation . ...
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Remove data.frame row names when using xtable

OK, I admit this one is a bit uptight (read: "stupid"), and I assume it's quite easy too. I'm writing a report and I want to use xtable package for LaTeX table generation (note that memisc package does the job, but say I want to do this solely with xtable ). ...
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Coredata Error “data: ”

I try to pull out data from CoreData with the following code 2 Answers 2 ...