大约有 48,000 项符合查询结果（耗时：0.0583秒） [XML]
What does the ^ operator do in Java?
...rator in Java
^ in Java is the exclusive-or ("xor") operator.
Let's take 5^6 as example:
(decimal) (binary)
5 = 101
6 = 110
------------------ xor
3 = 011
This the truth table for bitwise (JLS 15.22.1) and logical (JLS 15.22.2) xor:
^ | 0 1 ^ | F T
--+----...
Pandas index column title or name
...index name.
– Piotr Migdal
Apr 11 '15 at 20:37
14
it should be possible to specify index name at ...
How do we control web page caching, across all browsers?
...
2658
Introduction
The correct minimum set of headers that works across all mentioned clients (and p...
How to find list intersection?
actual output: [1,3,5,6]
expected output: [1,3,5]
11 Answers
11
...
How to compare software version number using js? (only number)
...
45 Answers
45
Active
...
Numbering rows within groups in a data frame
... Frank
62.4k88 gold badges8181 silver badges157157 bronze badges
answered Oct 16 '12 at 23:41
mnelmnel
103k2424 gold badges...
Syntax for creating a two-dimensional array
...
Try the following:
int[][] multi = new int[5][10];
... which is a short hand for something like this:
int[][] multi = new int[5][];
multi[0] = new int[10];
multi[1] = new int[10];
multi[2] = new int[10];
multi[3] = new int[10];
multi[4] = new int[10];
Note that e...
How to pip install a package with min and max version range?
...
|
edited Jun 15 '16 at 18:32
Leif Arne Storset
66955 silver badges1616 bronze badges
answere...
how does multiplication differ for NumPy Matrix vs Array classes?
...nd it more trouble than it's worth, though.
For arrays (prior to Python 3.5), use dot instead of matrixmultiply.
E.g.
import numpy as np
x = np.arange(9).reshape((3,3))
y = np.arange(3)
print np.dot(x,y)
Or in newer versions of numpy, simply use x.dot(y)
Personally, I find it much more readab...
How to form tuple column from two columns in Pandas
... |
edited Nov 7 '16 at 16:58
answered Apr 17 '13 at 19:24
D...