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Creating an R dataframe row-by-row
I would like to construct a dataframe row-by-row in R. I've done some searching, and all I came up with is the suggestion to create an empty list, keep a list index scalar, then each time add to the list a single-row dataframe and advance the list index by one. Finally, do.call(rbind,) on the list...
How can I get a file's size in C++? [duplicate]
Let's create a complementary question to this one .
What is the most common way to get the file size in C++?
Before answering, make sure it is portable (may be executed on Unix, Mac and Windows),
reliable, easy to understand and without library dependencies (no boost or qt, but for instance glib is...
detach all packages while working in R
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How to get current time and date in C++?
Is there a cross-platform way to get the current date and time in C++?
24 Answers
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How can I convert a dictionary into a list of tuples?
If I have a dictionary like:
11 Answers
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Elegant way to invert a map in Scala
Learning Scala currently and needed to invert a Map to do some inverted value->key lookups. I was looking for a simple way to do this, but came up with only:
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HTML5 canvas ctx.fillText won't do line breaks?
I can't seem to be able to add text to a canvas if the text includes "\n". I mean, the line breaks do not show/work.
17 Ans...
Are Exceptions in C++ really slow
I was watching Systematic Error Handling in C++—Andrei Alexandrescu he claims that Exceptions in C++ are very very slow.
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Why is Double.MIN_VALUE in not negative
Can anyone shed some light on why Double.MIN_VALUE is not actually the minimum value that Doubles can take? It is a positive value, and a Double can of course be negative.
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