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Why were pandas merges in python faster than data.table merges in R in 2012?
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| q1 | 6.32 | 89.0 | 14 |
| q2 | 5.72 | 108.0 | 18 |
| q3 | 11.00 | 56.9 | 5 |
| q4 | 5.57 | 90.1 | 16 |
| q5 | 30.70 | 731.0 | 23 |
+-----------+--------------+----------+--------+
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Java naming convention for static final variables [duplicate]
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72
That's still a constant. See the JLS for more information regarding the naming convention for c...
Get operating system info
.../wiki/Trident_%28layout_engine%29
https://stackoverflow.com/a/17907562/1415724
http://msdn.microsoft.com/en-us/library/ie/bg182625(v=vs.110).aspx
An article on MSDN Blogs
An article on NCZOnline
Although the edit was rejected (not by myself, but by some of the other editors), it's worth reading up...
What exactly is a reentrant function?
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CliffordClifford
72.2k1010 gold badges7676 silver badges141141 bronze badges
a...
Why is “while ( !feof (file) )” always wrong?
...1:15
fuz
72.3k2323 gold badges153153 silver badges294294 bronze badges
answered Oct 24 '14 at 22:28
Kerrek SBK...
Using @property versus getters and setters
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While I agree in most cases, be careful about hiding slow methods behind a @property decorator. The user of your API expects that property ...
Why does X[Y] join of data.tables not allow a full outer join, or a left join?
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To quote from the data.table FAQ 1.11 What is the difference between X[Y] and merge(X, Y)?
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What and where are the stack and heap?
...language standard (available at open-std.org/JTC1/SC22/WG14/www/docs/n1256.pdf ), requires a "stack". In fact, the word 'stack' does not even appear in the standard. This answers statements wrt/ to C's stack usage are true in general, but is in no way required by the language. See knosof.co.uk/cbo...
How to automatically generate a stacktrace when my program crashes
...e/dbingham/src/middle-earth-mud/alpha6/src/engine/main.cpp:34(main)[0x8049a72]
/lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xe5)[0xb7d1b775]
/build/buildd/glibc-2.9/csu/../sysdeps/i386/elf/start.S:122(_start)[0x8049801]
If you want to know the gory details, the best source is unfortunately the ...
What are the effects of exceptions on performance in Java?
...s, result was " + t.getValue()
);
}
}
Result:
method1 took 972 ms, result was 2
method2 took 1003 ms, result was 2
method3 took 66716 ms, result was 2
The slowdown from the try block is too small to rule out confounding factors such as background processes. But the catch block kille...