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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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Is a Java string really immutable?

...hange the lookup table used in Integer autoboxing etc. Now, the reason s1 and s2 change value, is that they both refer to the same interned string. The compiler does this (as mentioned by other answers). The reason s3 does not was actually a bit surprising to me, as I thought it would share the v...
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URL Fragment and 302 redirects

...2014-Jun-27: RFC 7231, Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content, has been published as a PROPOSED STANDARD. From the Changelog: The syntax of the Location header field has been changed to allow all URI references, including relative references and fragments, along with...
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Heroku 'Permission denied (publickey) fatal: Could not read from remote repository' woes

...be generated if you don't have one alredy, in my case I alredy had the key and just needed to add the key to heroku – joseramonc Dec 3 '14 at 16:19 4 ...
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What is Java EE? [duplicate]

... Java EE is actually a collection of technologies and APIs for the Java platform designed to support "Enterprise" Applications which can generally be classed as large-scale, distributed, transactional and highly-available applications designed to support mission-critical bus...
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Some projects cannot be imported because they already exist in the workspace error in Eclipse

I am trying to import a project that me and my co-worker have been working on.. and keep getting this error after I select-- "import" then "import existing project" then click archive file, and then I click next, and this error comes up: ...
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What are metaclasses in Python?

In Python, what are metaclasses and what do we use them for? 22 Answers 22 ...
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Why is “except: pass” a bad programming practice?

...couraged. Why is this bad? Sometimes I just don't care what the errors are and I want to just continue with the code. 16 An...
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How to loop through file names returned by find?

...st). If you have time, read through the rest to see several different ways and the problems with most of them. The full answer: The best way depends on what you want to do, but here are a few options. As long as no file or folder in the subtree has whitespace in its name, you can just loop over ...
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How to detect a Christmas Tree? [closed]

... I have an approach which I think is interesting and a bit different from the rest. The main difference in my approach, compared to some of the others, is in how the image segmentation step is performed--I used the DBSCAN clustering algorithm from Python's scikit-learn; it...