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Apply pandas function to column to create multiple new columns?
...ature1 feature2
0 0.772692 1.772692 -0.227308
1 0.857210 1.857210 -0.142790
2 0.065639 1.065639 -0.934361
3 0.819160 1.819160 -0.180840
4 0.088212 1.088212 -0.911788
EDIT:
Please be aware of the huge memory consumption and low speed: https://ys-l.github.io/posts/2015/08/28/how-not-to-us...
How to convert a clojure keyword into a string?
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answered Sep 15 '10 at 15:49
kotarakkotarak
16.3k22 gold badges4444 silver badges3838 bronze badges
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Numpy how to iterate over columns of array?
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49
For those wondering, array.T isn't costly, as it just changes the 'strides' of array (see this answer for an interesting discussion)
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What is this: [Ljava.lang.Object;?
...out.println(new int[0][0][7]); // [[[I@xxxxx
System.out.println(new String[4][2]); // [[Ljava.lang.String;@xxxxx
System.out.println(new boolean[256]); // [Z@xxxxx
The reason why the toString() method on arrays returns String in this format is because arrays do not @Override the method inherited fr...
ARC and bridged cast
...y released.
– Tony
Dec 26 '11 at 3:14
2
Once in ARC land you don't think about retain counts anym...
Best way to make Java's modulus behave like it should with negative numbers?
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144
It behaves as it should a % b = a - a / b * b; i.e. it's the remainder.
You can do (a % b + b)...
.NET JIT potential error?
...l 0000000C
The bug disappears when you let oVec.y increment to 4, that's too many calls to unroll.
One workaround is this:
for (int x = 0; x < 2; x++) {
for (int y = 0; y < 2; y++) {
oDoesSomething.Do(new IntVec(x, y));
}
}
UPDATE: re-checked in August 2012, t...
Moq mock method with out specifying input parameter
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edited Mar 19 '14 at 12:10
tronda
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answ...
SQL multiple column ordering
...ted Sep 7 '18 at 9:57
user6269864
answered Jan 12 '10 at 18:03
Ignacio Vazquez-AbramsIgnacio Vazquez-Abrams
...
Spring CrudRepository findByInventoryIds(List inventoryIdList) - equivalent to IN clause
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edited Feb 15 '17 at 15:41
nietaki
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answered Se...
