大约有 47,000 项符合查询结果(耗时:0.0730秒) [XML]
What is an intuitive explanation of the Expectation Maximization technique? [closed]
... parameters:
import numpy as np
from scipy import stats
np.random.seed(110) # for reproducible results
# set parameters
red_mean = 3
red_std = 0.8
blue_mean = 7
blue_std = 2
# draw 20 samples from normal distributions with red/blue parameters
red = np.random.normal(red_mean, red_std, size=20)
b...
Set custom attribute using JavaScript
...
202
Use the setAttribute method:
document.getElementById('item1').setAttribute('data', "icon: 'bas...
How to get the input from the Tkinter Text Widget?
...eving its input.
def retrieve_input():
input = self.myText_Box.get("1.0",END)
The first part, "1.0" means that the input should be read from line one, character zero (ie: the very first character). END is an imported constant which is set to the string "end". The END part means to read until ...
How to merge a transparent png image with another image using PIL
....png")
foreground = Image.open("test2.png")
background.paste(foreground, (0, 0), foreground)
background.show()
First parameter to .paste() is the image to paste. Second are coordinates, and the secret sauce is the third parameter. It indicates a mask that will be used to paste the image. If you p...
How to write asynchronous functions for Node.js
...|
edited Aug 1 '11 at 14:30
answered Aug 1 '11 at 13:20
Ray...
`elif` in list comprehension conditionals
... |
edited Jul 17 at 0:21
answered Apr 3 '12 at 5:23
R...
What is the javascript filename naming convention? [closed]
...
190
One possible naming convention is to use something similar to the naming scheme jQuery uses. It'...
Print a list in reverse order with range()?
...
use reversed() function:
reversed(range(10))
It's much more meaningful.
Update:
If you want it to be a list (as btk pointed out):
list(reversed(range(10)))
Update:
If you want to use only range to achieve the same result, you can use all its parameters. ran...
Convert a character digit to the corresponding integer in C
...
As per other replies, this is fine:
char c = '5';
int x = c - '0';
Also, for error checking, you may wish to check isdigit(c) is true first. Note that you cannot completely portably do the same for letters, for example:
char c = 'b';
int x = c - 'a'; // x is now not necessarily 1
Th...
What's the UIScrollView contentInset property for?
...enclosing scroll view.
Obj-C
aScrollView.contentInset = UIEdgeInsetsMake(0, 0, 0, 7.0);
Swift 5.0
aScrollView.contentInset = UIEdgeInsets(top: 0, left: 0, bottom: 0, right: 7.0)
Here's a good iOS Reference Library article on scroll views that has an informative screenshot (fig 1-3) - I'll rep...