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How can I count text lines inside an DOM element? Can I?

... var element = document.getElementById('content'); document.defaultView.getComputedStyle(element, null).getPropertyValue("lineHeight"); You will also need to take padding and inter-line spacing into account. EDIT Fully self-contained test, explicitly setting line-height: function countLines...
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How to calculate the CPU usage of a process by PID in Linux from C?

....................... Field Content pid process id tcomm filename of the executable state state (R is running, S is sleeping, D is sleeping in an uninterruptible wait, Z is zombie, T is traced or stopped) ppid process id of the pare...
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What is the runtime performance cost of a Docker container?

I'd like to comprehensively understand the run-time performance cost of a Docker container. I've found references to networking anecdotally being ~100µs slower . ...
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Want to find records with no associated records in Rails

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Calling C/C++ from Python?

...jects to Python, and vice-versa, using no special tools -- just your C++ compiler. It is designed to wrap C++ interfaces non-intrusively, so that you should not have to change the C++ code at all in order to wrap it, making Boost.Python ideal for exposing 3rd-party libraries to Python. The l...
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How to join (merge) data frames (inner, outer, left, right)

...) will work for these examples because R automatically joins the frames by common variable names, but you would most likely want to specify merge(df1, df2, by = "CustomerId") to make sure that you were matching on only the fields you desired. You can also use the by.x and by.y parameters if the mat...
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Any way to make a WPF textblock selectable?

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MySQL connection not working: 2002 No such file or directory

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What are allowed characters in cookies?

...wed characters in both cookie name and value? Are they same as URL or some common subset? 13 Answers ...
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Why should I avoid std::enable_if in function signatures

...ON_REQUIRES macro here, makes it much nicer to read, and it works in C++03 compilers as well, and it relies on using enable_if in the return type. Also, using enable_if in function template parameters causes problems for overloading, because now the function signature aren't unique causing ambiguous...