大约有 13,906 项符合查询结果（耗时：0.0258秒） [XML]
Linq style “For Each” [duplicate]
Is there any Linq style syntax for "For each" operations?
6 Answers
6
...
finding and replacing elements in a list
... edited Jan 31 '18 at 13:46
Maximilian Peters
21.7k77 gold badges5353 silver badges7070 bronze badges
answered Apr 6 '10 at 1:41
...
How to crop an image in OpenCV using Python
...y slicing.
import cv2
img = cv2.imread("lenna.png")
crop_img = img[y:y+h, x:x+w]
cv2.imshow("cropped", crop_img)
cv2.waitKey(0)
share
|
improve this answer
|
follow
...
Annotating text on individual facet in ggplot2
I want to annotate some text on last facet of the plot with the following code:
6 Answers
...
Ternary Operator Similar To ?:
...lue a good pattern? to get
scala> "Hi".getClass.getSimpleName |> {x => x.endsWith("$") ? x.init | x}
res0: String = String
scala> List.getClass.getSimpleName |> {x => x.endsWith("$") ? x.init | x}
res1: String = List
Is this adequate for your needs?
...
Build an ASCII chart of the most commonly used words in a given text [closed]
Build an ASCII chart of the most commonly used words in a given text.
59 Answers
59
...
Node.js + Nginx - What now?
I've set up Node.js and Nginx on my server. Now I want to use it, but, before I start there are 2 questions:
12 Answers
...
Maximum size of a element
I'm working with a canvas element with a height of 600 to 1000 pixels and a width of several tens or hundreds of thousands of pixels. However, after a certain number of pixels (obviously unknown), the canvas no longer display shapes I draw with JS.
...
Apply pandas function to column to create multiple new columns?
...swer, you can do the assignment in one pass using df.merge:
df.merge(df.textcol.apply(lambda s: pd.Series({'feature1':s+1, 'feature2':s-1})),
left_index=True, right_index=True)
textcol feature1 feature2
0 0.772692 1.772692 -0.227308
1 0.857210 1.857210 -0.142790
2 0.065639 1.06563...
How do I install Python OpenCV through Conda?
...
1
2
Next
225
...