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How can I convert a DateTime to the number of seconds since 1970?
...DateTime variable to Unix time, ie, the number of seconds since Jan 1st, 1970. It looks like a DateTime is actually implemented as the number of 'ticks' since Jan 1st, 0001.
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Understanding exactly when a data.table is a reference to (vs a copy of) another data.table
... 2), b = c(11, 12))
newDT <- DT
.Internal(inspect(DT))
# @0000000003B7E2A0 19 VECSXP g0c7 [OBJ,NAM(2),ATT] (len=2, tl=100)
# @00000000040C2288 14 REALSXP g0c2 [NAM(2)] (len=2, tl=0) 1,2
# @00000000040C2250 14 REALSXP g0c2 [NAM(2)] (len=2, tl=0) 11,12
# ATTRIB: # ..snip..
.Internal(inspec...
What's the difference between and , and ?
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They have the same effect on normal web browser rendering engines, but there is a fundamental di...
What does “abstract over” mean?
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answered Jan 22 '11 at 3:07
ApocalispApocalisp
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How to understand Locality Sensitive Hashing?
...an/mmds/ch3a.pdf
Also I recommend the below slide:
http://www.cs.jhu.edu/%7Evandurme/papers/VanDurmeLallACL10-slides.pdf .
The example in the slide helps me a lot in understanding the hashing for cosine similarity.
I borrow two slides from Benjamin Van Durme & Ashwin Lall, ACL2010 and try to e...
Can I list-initialize a vector of move-only type?
If I pass the following code through my GCC 4.7 snapshot, it tries to copy the unique_ptr s into the vector.
5 Answers
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SPA best practices for authentication and session management
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487
+50
This ques...
Converting a List to a comma separated string
...el Minaev
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git merge: apply changes to code that moved to a different file
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This solution only involves basic git commands, unlike editing patches or using patch (which involves also potentially a lot of work), and t...
Windows 7, 64 bit, DLL problems
...with our executable. I'm running this C++ 32-bit executable on my Windows 7 64-bit development box that also has all those Microsoft applications (Visual Studio 2008 + 2010, TFS, SDK, Microsoft Office)...
And it's still running just fine.
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