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How can I plot with 2 different y-axes?

...at each set of points has its own (different) y-axis (i.e., in positions 2 and 4 on the figure) but the points appear superimposed on the same figure. ...
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Relational table naming convention [closed]

I'm starting a new project and would like to get my table- and column names right from the start. For example I've always used plural in table names but recently learned singular is correct. ...
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Greedy vs. Reluctant vs. Possessive Quantifiers

I found this excellent tutorial on regular expressions and while I intuitively understand what "greedy", "reluctant" and "possessive" quantifiers do, there seems to be a serious hole in my understanding. ...
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When does invoking a member function on a null instance result in undefined behavior?

... Both (a) and (b) result in undefined behavior. It's always undefined behavior to call a member function through a null pointer. If the function is static, it's technically undefined as well, but there's some dispute. The first thin...
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Meaning of acronym SSO in the context of std::string

In a C++ question about optimization and code style , several answers referred to "SSO" in the context of optimizing copies of std::string . What does SSO mean in that context? ...
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What would a “frozen dict” be?

...self._d[key] def __hash__(self): # It would have been simpler and maybe more obvious to # use hash(tuple(sorted(self._d.iteritems()))) from this discussion # so far, but this solution is O(n). I don't know what kind of # n we are going to run into, but sometime...
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Insert code into the page context using a content script

...e exposed page script directly, you have to use them in the content script and communicate to the exposed page script via a special DOM CustomEvent handler, example one and two. If you don't have to use chrome.* APIs, simply inject all of your JS code in the page by adding a <script> tag as sh...
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Android: install .apk programmatically [duplicate]

I made this with help from Android download binary file problems and Install Application programmatically on Android . ...
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What is the effect of extern “C” in C++?

...then link to using the C name. Since C++ has overloading of function names and C does not, the C++ compiler cannot just use the function name as a unique id to link to, so it mangles the name by adding information about the arguments. A C compiler does not need to mangle the name since you can not ...
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Encrypting & Decrypting a String in C# [duplicate]

...er seems to be getting a lot of upvotes, I've updated it to fix silly bugs and to generally improve the code based upon comments and feedback. See the end of the post for a list of specific improvements. As other people have said, Cryptography is not simple so it's best to avoid "rolling your own"...