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Remove data.frame row names when using xtable
...amp; 84.67 & 2.94 \\
0.00 & 6.00 & 19.12 & 115.25 & 3.39 \\
0.00 & 8.00 & 15.05 & 194.17 & 4.10 \\
1.00 & 4.00 & 28.07 & 81.88 & 2.04 \\
1.00 & 6.00 & 20.57 & 131.67 & 2.75 \\
1.00 & 8.00 & 15.40 & 299.50 ...
Is it possible to use argsort in descending order?
...0 loops each)
>>> timeit avgDists.argsort()[::-1][:n]
1.64 µs ± 3.39 ns per loop (mean ± std. dev. of 7 runs, 1000000 loops each)
>>> timeit avgDists.argsort()[-n:][::-1]
1.64 µs ± 3.66 ns per loop (mean ± std. dev. of 7 runs, 1000000 loops each)
For larger arrays, the args...
Add one row to pandas DataFrame
...-------------|-------------|-------------|
| .append | 0.69 | 3.39 | 6.78 |
|------------|-------------|-------------|-------------|
| .loc w/o | 0.74 | 3.90 | 8.35 |
| prealloc | | | |
|------------|-------------|-...
What is PostgreSQL explain telling me exactly?
...manages a forum:
EXPLAIN SELECT * FROM post LIMIT 50;
Limit (cost=0.00..3.39 rows=50 width=422)
-> Seq Scan on post (cost=0.00..15629.12 rows=230412 width=422)
Here's the graphical explanation from PgAdmin:
(When you're using PgAdmin, you can point your mouse at a component to read th...
scala vs java, performance and memory? [closed]
...
Code size java/scala 3.39/2.21
– hammar
May 5 '11 at 17:27
22
...
C++ performance challenge: integer to std::string conversion
...7 64-bit, 8 GB RAM, Visual C++ 2010 32-bit:
cl /Ox /EHsc
stringstreams: 3.39 MB/s, 3.67 MB/s
sprintf: 16.8 MB/s, 16.2 MB/s
mine: 194 MB/s, 207 MB/s (with PGO enabled: 250 MB/s)
Core i7, Windows 7 64-bit, 8 GB RAM, Visual C++ 2010 64-bit:
cl /Ox /EHsc
stringstreams: 4.42 MB/s, 4.92 MB/s
sprin...