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Java : How to determine the correct charset encoding of a stream
...chardet does not work. It delivers UTF-8 most of time, even if the file is 100% windows-1212 encoded.
– Brain
Sep 11 '16 at 18:28
1
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SQL Joins Vs SQL Subqueries (Performance)?
...at will help a lot...) among other things.
The only REAL way to tell with 100% certainty which is faster is to turn on performance tracking (IO Statistics is especially useful) and run them both. Make sure to clear your cache between runs!
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Spark java.lang.OutOfMemoryError: Java heap space
... knowledge into your algo/serialisation can minimise memory/cache-space by 100x or 1000x, whereas all a Dataset will likely give is 2x - 5x in memory and 10x compressed (parquet) on disk.
http://spark.apache.org/docs/1.2.1/configuration.html
EDIT: (So I can google myself easier) The following is ...
Detect iPad users using jQuery?
...AppleWebKit (KHTML, like Gecko) Mobile [FBAN/FBForIPhone;FBAV/4.1.1;FBBV/4110.0;FBDV/iPad2,1;FBMD/iPad;FBSN/iPhone OS;FBSV/5.1.1;FBSS/1; FBCR/;FBID/tablet;FBLC/en_US;FBSF/1.0]
iPhone: Mozilla/5.0 (iPhone; U; CPU iPhone OS 5_1_1 like Mac OS X; ru_RU) AppleWebKit (KHTML, like Gecko) Mobile [FBAN/FBFor...
How do I restrict a float value to only two places after the decimal point in C?
... <math.h>
float val = 37.777779;
float rounded_down = floorf(val * 100) / 100; /* Result: 37.77 */
float nearest = roundf(val * 100) / 100; /* Result: 37.78 */
float rounded_up = ceilf(val * 100) / 100; /* Result: 37.78 */
Notice that there are three different rounding rules you mi...
Java EE 6 @javax.annotation.ManagedBean vs. @javax.inject.Named vs. @javax.faces.ManagedBean
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Arjan Tijms
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answered Aug 16 '12 at 13:43
jan grothjan groth
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How do I compute derivative using Numpy?
...y I can think of is using numpy's gradient function:
x = numpy.linspace(0,10,1000)
dx = x[1]-x[0]
y = x**2 + 1
dydx = numpy.gradient(y, dx)
This way, dydx will be computed using central differences and will have the same length as y, unlike numpy.diff, which uses forward differences and will retu...
Refresh all files in buffer from disk in vim
...er; :bufdo turns off syntax highlighting by design.
Found via: http://vim.1045645.n5.nabble.com/Bug-report-bufdo-e-breaking-syntax-highlighting-on-displayed-buffers-tp1209995p1209998.html
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What are paramorphisms?
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110
Yes, that's para. Compare with catamorphism, or foldr:
para :: (a -> [a] -> b -> b) ...
How to find the php.ini file used by the command line?
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answered Sep 19 '10 at 7:11
MchlMchl
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