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“Cloning” row or column vectors
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Here's an elegant, Pythonic way to do it:
>>> array([[1,2,3],]*3)
array([[1, 2, 3],
[1, 2, 3],
[1, 2, 3]])
>>> array([[1,2,3],]*3).transpose()
array([[1, 1, 1],
[2, 2, 2],
[3, 3, 3]])
the problem with [16] seems to be that the transpose has ...
Replace only text inside a div using jquery
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edited Oct 29 '14 at 20:50
cuSK
7701010 silver badges2323 bronze badges
answered Aug 8 '1...
import module from string variable
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288
The __import__ function can be a bit hard to understand.
If you change
i = __import__('matp...
Difference between Xcode version (CFBundleShortVersionString) and build (CFBundleVersion)
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edited Jul 20 '12 at 17:36
answered Jul 30 '11 at 6:10
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Interpolating a string into a regex
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274
Same as string insertion.
if goo =~ /#{Regexp.quote(foo)}/
#...
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How to manually install an artifact in Maven 2?
...ntered some errors when I tried to install an artifact manually with Maven 2. I wanted to install a jar from a local directory with the command
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Python argparse mutual exclusive group
... | [-b yyy -c zzz]], you'd have:
prog
command 1
-a: ...
command 2
-b: ...
-c: ...
To invoke with the first set of arguments:
prog command_1 -a xxxx
To invoke with the second set of arguments:
prog command_2 -b yyyy -c zzzz
You can also set the sub command arguments as posi...
What is the >>>= operator in C?
...ply 0.
Meanwhile, 0X.1P1 is a hexadecimal floating point literal equal to 2/16 = 0.125. In any case, being non-zero, it's also true as a boolean, so negating it twice with !! again produces 1. Thus, the whole thing simplifies down to:
while( a[0] >>= a[1] )
The operator >>= is a co...
Generate a random double in a range
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241
To generate a random value between rangeMin and rangeMax:
Random r = new Random();
double ran...
How to set Python's default version to 3.x on OS X?
I'm running Mountain Lion and the basic default Python version is 2.7. I downloaded Python 3.3 and want to set it as default.
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