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What are the “standard unambiguous date” formats for string-to-date conversion in R?
Please consider the following
5 Answers
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How do I change the UUID of a virtual disk?
...an already-existing hard disk. When I try to select the existing hard disk file, a .vhd file, it displays an error saying the virtual hard disk cannot be used because the UUID already exists.
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Where can I get a “useful” C++ binary search algorithm?
I need a binary search algorithm that is compatible with the C++ STL containers, something like std::binary_search in the standard library's <algorithm> header, but I need it to return the iterator that points at the result, not a simple boolean telling me if the element exists.
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Is there a generator version of `string.split()` in Python?
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It is highly probable that re.finditer uses fairly minimal memory overhead.
def split_iter(string):
return (x.group(0) for x in re.finditer(r"[A-Za-z']+", string))
Demo:
>>> list( split_iter("A programmer's RegEx test.") )
['A', "programm...
How do I use the new computeIfAbsent function?
I very much want to use Map.computeIfAbsent but it has been too long since lambdas in undergrad.
4 Answers
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Trimming a huge (3.5 GB) csv file to read into R
So I've got a data file (semicolon separated) that has a lot of detail and incomplete rows (leading Access and SQL to choke). It's county level data set broken into segments, sub-segments, and sub-sub-segments (for a total of ~200 factors) for 40 years. In short, it's huge, and it's not going to fit...
How do I add a delay in a JavaScript loop?
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The setTimeout() function is non-blocking and will return immediately. Therefore your loop will iterate very quickly and it will initiate 3-second timeout triggers one after the other in quick succession. That is why your first alerts pops up...
Global and local variables in R
I am a newbie for R, and I am quite confused with the usage of local and global variables in R.
3 Answers
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ValueError: The truth value of an array with more than one element is ambiguous. Use a.any() or a.al
I just discovered a logical bug in my code which was causing all sorts of problems. I was inadvertently doing a bitwise AND instead of a logical AND .
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No route matches “/users/sign_out” devise rails 3
I've installed devise on my app and applied the following in my application.html.erb file:
29 Answers
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