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Case Insensitive Flask-SQLAlchemy Query
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edited Mar 18 '16 at 13:42
answered May 15 '13 at 19:44
p...
Finding # occurrences of a character in a string in Ruby
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143
If you just want the number of a's:
puts "Melanie is a noob".count('a') #=> 2
Docs for ...
廉价共享存储解决方案1-drbd+ha+nfs - 更多技术 - 清泛网 - 专注C/C++及内核技术
...个分区；
2、一个soft raid 设备；
3、一个LVM的逻辑卷；
4、一个EVMS（Enterprise Volume Management System，企业卷管理系统）的卷；
5、其他任何的块设备。
2、基于DRBD的解决方案
从互联网上也搜索到两个比较成功且适合上面...
What does the exclamation mark mean in a Haskell declaration?
...his means:
data Foo = Foo Int Int !Int !(Maybe Int)
f = Foo (2+2) (3+3) (4+4) (Just (5+5))
The function f above, when evaluated, will return a "thunk": that is, the code to execute to figure out its value. At that point, a Foo doesn't even exist yet, just the code.
But at some point someone may...
Undock Chrome Developer Tools
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answered Nov 26 '13 at 14:42
DarkWandererDarkWanderer
8,38311 gold badge2222 silver badges5151 bronze badges
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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...