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How to see which flags -march=native will activate?
...on gcc 4.9.2 on a Phenom, the output includes these: --param l1-cache-size=64 --param l1-cache-line-size=64 --param l2-cache-size=512
– Daniel Santos
Jan 29 '15 at 0:22
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Change MySQL default character set to UTF-8 in my.cnf?
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Is your first line max_allowed_packet=64M related to this UTF8 issue in any way?
– malhal
Nov 29 '12 at 3:40
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Should you choose the MONEY or DECIMAL(x,y) datatypes in SQL Server?
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"Never" is a strong word. "Money" is useful for casting results to that type for display to the user in a culture-sensitive way, but you'r...
Should IBOutlets be strong or weak under ARC?
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PS: weak is a quite a bit cheaper in ARM64 :D
– hypercrypt
Dec 10 '13 at 22:11
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Can I run multiple versions of Google Chrome on the same machine? (Mac or Windows)
...chasF Lekschas
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Applying a git post-commit hook to all current and future repos
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CascabelCascabel
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Efficient way to apply multiple filters to pandas DataFrame or Series
...(np.logical_and, conditions)
c_1 = data.col1 == True
c_2 = data.col2 < 64
c_3 = data.col3 != 4
data_filtered = data[conjunction(c1,c2,c3)]
np.logical operates on and is fast, but does not take more than two arguments, which is handled by functools.reduce.
Note that this still has some redundan...
What does “#define _GNU_SOURCE” imply?
...HELPING ICE
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Is inline assembly language slower than native C++ code?
...hecking for non-overlap if you omit __restrict). SSE2 is baseline for x86-64, and with shuffling SSE2 can do 2x 32-bit multiplies at once (producing 64-bit products, hence the shuffling to put the results back together). godbolt.org/z/r7F_uo. (SSE4.1 is needed for pmulld: packed 32x32 => 32-bit...
How can I specify a [DllImport] path at runtime?
...y.
I've used this method to choose at runtime whether to load a 32-bit or 64-bit native DLL without having to modify a bunch of P/Invoke-d functions. Stick the loading code in a static constructor for the type that has the imported functions and it'll all work fine.
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