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ggplot with 2 y axes on each side and different scales

I need to plot a bar chart showing counts and a line chart showing rate all in one chart, I can do both of them separately, but when I put them together, I scale of the first layer (i.e. the geom_bar ) is overlapped by the second layer (i.e. the geom_line ). ...
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How do I pass a variable by reference?

...n seems unclear about whether parameters are passed by reference or value, and the following code produces the unchanged value 'Original' ...
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How can I calculate an md5 checksum of a directory?

...l files of a particular type ( *.py for example) placed under a directory and all sub-directories. 15 Answers ...
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Utilizing multi core for tar+gzip/bzip compression/decompression

I normally compress using tar zcvf and decompress using tar zxvf (using gzip due to habit). 6 Answers ...
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Elegant way to check for missing packages and install them?

...de with coauthors these days. Many of them are novice/intermediate R users and don't realize that they have to install packages they don't already have. ...
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Difference between char* and const char*?

...cleared up with the use of a variable after the statements mentioned above and by giving reference to that variable. – ankit.karwasra Oct 8 '13 at 9:16 3 ...
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Natural Sort Order in C#

...The easiest thing to do is just P/Invoke the built-in function in Windows, and use it as the comparison function in your IComparer: [DllImport("shlwapi.dll", CharSet = CharSet.Unicode)] private static extern int StrCmpLogicalW(string psz1, string psz2); Michael Kaplan has some examples of how thi...
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Handling Touch Event in UILabel and hooking it up to an IBAction

...rner try the tag property. make sure to use labelTap: instead of labelTap. and use - (void) labelTap:(id)sender;. – thedjaney Jul 28 '14 at 9:43 1 ...
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Why does ReSharper tell me “implicitly captured closure”?

... The warning tells you that the variables end and start stay alive as any of the lambdas inside this method stay alive. Take a look at the short example protected override void OnLoad(EventArgs e) { base.OnLoad(e); int i = 0; Random g = new Random(); t...
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Building with Lombok's @Slf4j and Intellij: Cannot find symbol log

I have a maven project that builds with no problems from the command line. However, when I build it with IntelliJ, I get the error: ...