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... More valuable than cut and paste code is the explanation of what the best solution is and why it works without the baggage especially if it is three lines long.
– Tatarize
Jul 31 '15 at 12:45
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Read an Excel file directly from a R script
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readxl and openxlsx are the best. readxl is faster but it doesn't allow to write. Anyway, none of them works well when trying to specify column classes/types.
– skan
Oct 15 '15 at 17:55
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What exactly does the “u” do? “git push -u origin master” vs “git push origin master”
I'm apparently terrible at using git, despite my best attempts to understand it.
4 Answers
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What is “lifting” in Scala?
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Perfect! Just one more reason to say: Scala - the best. Which could be lifted to Martin Odersky & Co - the best. I even would to use liftM for that, but didn't manage understand how to do that properly. Guys, you're rock!
– Dmitry Bespalov
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How to create the most compact mapping n → isprime(n) up to a limit N?
...me(number) there would be a data structure I could query.
I define the best algorithm , to be the algorithm that produces a data structure with lowest memory consumption for the range (1, N], where N is a constant.
Just an example of what I am looking for: I could represent every odd number wi...
How does StartCoroutine / yield return pattern really work in Unity?
...s also used for returning "ordinary" things one by one, such as simply the items in an array, etc.)
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Why was the arguments.callee.caller property deprecated in JavaScript?
...case (you can achieve it in select cases through tracing etc, but even the best code is sub optimal due to checks that would not otherwise be necessary). The other major issue is that the recursive call will get a different this value, for example:
var global = this;
var sillyFunction = function (...
How much faster is C++ than C#?
...rst implementing your application correctly in whatever language suits you best, then find performance bottlenecks if it runs too slow, and then think about how to optimize the code. In the worst case, you might need to call out to C code through a foreign function interface, so you'll still have th...
iOS 7 status bar back to iOS 6 default style in iPhone app?
...chnical reasons, why this is not always a good idea. You should do what is best for your users and not simply follow the whimsy of the platform.
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Is it possible to specify your own distance function using scikit-learn K-Means Clustering?
...t; |X| x |Y| cdist array, any cdist metric
X or Y may be sparse -- best csr
"""
# todense row at a time, v slow if both v sparse
sxy = 2*issparse(X) + issparse(Y)
if sxy == 0:
return cdist( X, Y, **kwargs )
d = np.empty( (X.shape[0], Y.shape[0]), np.float64 )
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