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How to convert a data frame column to numeric type?
... a 1
2 b 2 2 b 2
3 c 3 3 c 3
4 d 4 4 d 4
5 e 5 5 e 5
and let us run:
> sapply(d, mode)
char fake_char fac char_fac num
"character" "character" "numeric" "numeric" "numer...
What's the difference between => , ()=>, and Unit=>
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What is the “FS”/“GS” register intended for?
...his feature, that nobody was going to use it. Go, Andy!)
AMD in going to 64 bits decided they didn't care if they eliminated Multics as a choice (that's the charitable interpretation; the uncharitable one is they were clueless about Multics) and so disabled the general capability of segment registe...
What would cause an algorithm to have O(log n) complexity?
...mber less than or equal to one? For 16, we have that
16 / 2 = 8
8 / 2 = 4
4 / 2 = 2
2 / 2 = 1
Notice that this ends up taking four steps to complete. Interestingly, we also have that log2 16 = 4. Hmmm... what about 128?
128 / 2 = 64
64 / 2 = 32
32 / 2 = 16
16 / 2 = 8
8 / 2 = 4
4 / ...
When is memoization automatic in GHC Haskell?
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public friend swap member function
...if it will be considered during a function call. For the details, read §3.4.2. In this case, std::swap normally isn't considered; but we can associate it (add it to the set of overloads considered by unqualified swap), allowing it to be found.
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Why would introducing useless MOV instructions speed up a tight loop in x86_64 assembly?
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How to change a module variable from another module?
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edited Apr 9 '19 at 14:36
Marco
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answered Aug...
What is Weak Head Normal Form?
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I'll try to give an explanation in simple terms. As others have pointed out, head normal form ...