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Equivalent of “throw” in R
...hrow" an error in R? I have a function that takes a data frame and some column names and does stuff with them. If the columns don't exist, I want the function to stop and to stop all functions depending on it.
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How to check for an active Internet connection on iOS or macOS?
I would like to check to see if I have an Internet connection on iOS using the Cocoa Touch libraries or on macOS using the Cocoa libraries.
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Storing C++ template function definitions in a .CPP file
I have some template code that I would prefer to have stored in a CPP file instead of inline in the header. I know this can be done as long as you know which template types will be used. For example:
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What's the best way to inverse sort in scala?
What is the best way to do an inverse sort in scala? I imagine the following is somewhat slow.
9 Answers
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Changing the case of a string in Eclipse
How do I make a lowercase string uppercase using Eclipse? I want to select a string and either uppercase it or lowercase it. Is there a shortcut for doing this?
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Scala Programming for Android
I have followed the tutorial at Scala and Android with Scala 2.7.3 final. The resulting Android App works but even the most basic application takes several minutes (!) to compile and needs 900 kb compressed, which is a show stopper for mobile applications. Additionally, the IDE runs out of mem...
Adding hours to JavaScript Date object?
It amazes me that JavaScript's Date object does not implement an add function of any kind.
14 Answers
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What is the difference D3 datum vs. data?
Can someone please explain the difference between datum() and data() in D3.js? I see both being used and I am not sure why you should choose one over the other?
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C++ obtaining milliseconds time on Linux — clock() doesn't seem to work properly
On Windows, clock() returns the time in milliseconds, but on this Linux box I'm working on, it rounds it to the nearest 1000 so the precision is only to the "second" level and not to the milliseconds level.
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Understanding PrimeFaces process/update and JSF f:ajax execute/render attributes
What exactly are process and update in PrimeFaces p:commandXxx components and execute and render in f:ajax tag?
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